Publications

2020

J. K. Philipp, S. Fritsch, R. Ludwig
Cyclic Octamer of Hydroxyl‐functionalized Cations with Net Charge Q=+8e Kinetically Stabilized by a ‘Molecular Island’ of Cooperative Hydrogen Bonds
ChemPhysChem, 21, 2411-2416, 2020

V. Overbeck, B. Golub, H. Schröder, A. Appelhagen, D. Paschek, K. Neymeyr, R. Ludwig
Probing Relaxation Models by Means of Fast Field-Cycling Relaxometry, NMR Spectroscopy and Molecular Dynamics Simulations: Detailed Insight Into the Translational and Rotational Dynamics of a Protic Ionic Liquid
J. Mol. Liq., 319, 114207, 2020

H. Lange, H. Schröder, E. Oberem, A. Villinger, J. Rabeah, R. Ludwig, K. Neymeyr, W. W. Seidel
Facile Synthesis of a Stable Side-on Phosphinyne Complex by Redox Driven Intramolecular Cyclisation
Chem. Eur. J., 26, 11492-11502, 2020

A. E. Khudozhitkov, T. Niemann, P. Stange, M. Donoshita, A. G. Stepanov, H. Kitagawa, D. I. Kolokolov, R. Ludwig
Freezing the Motion in Hydroxy-Functionalized Ionic Liquids-Temperature Dependent NMR Deuteron Quadrupole Coupling Constants for Two Types of Hydrogen Bonds Far below the Glass Transition
J. Phys. Chem. Lett., 11, 6000-6006, 2020

M. Ans, M. Paramasivam, K. Ayub, R. Ludwig, M. Zahid, X. Xiao, J. Iqbal
Designing Alkoxy-Induced Based High Performance Near Infrared Sensitive Small Molecule Acceptors for Organic Solar Cells
J. Mol. Liq., 305, 112829, 2020

A. Strate, J. Neumann, T. Niemann, P. Stange, A. E. Khudozhitkov, A. G. Stepanov, D. Paschek, D. I. Kolokolov, R. Ludwig
Counting Cations Involved in Cationic Clusters of Hydroxy-Functionalized Ionic Liquids by Means of Infrared and Solid-State NMR Spectroscopy
Phys. Chem. Chem. Phys., 22, 6861-6867, 2020

P. Honegger, V. Overbeck, A. Strate, A. Appelhagen, M. Sappl, E. Heid, C. Schröder, R. Ludwig, O. Steinhauser
Understanding the Nature of Nuclear Magnetic Resonance Relaxation by Means of Fast-Field-Cycling Relaxometry and Molecular Dynamics Simulations - The Validity of Relaxation Models
J. Phys. Chem. Lett., 11, 2165-2170, 2020

H. Li, T. Niemann, R. Ludwig, R. Atkin
Effect of Hydrogen Bonding Between Ions of Like Charge on the Boundary Layer Friction of Hydroxy-Functionalized Ionic Liquids
J. Phys. Chem. Lett., 11, 3905-3910, 2020

S. Abbas, F. Rashid, E. Ulker, S. Zaib, K. Ayub, S. Ullah, M. A. Nadeem, S. Yousuf, R. Ludwig, S. Ali, J. Iqbal
Anticancer Evaluation of a Manganese Complex on HeLa and MCF-7 Cancer Cells: Design, Deterministic Solvothermal Synthesis Approach, Hirshfeld Analysis, DNA Binding, Intracellular Reactive Oxygen Spiecies (ROS) Production, Electrochemical Characterization and Density Functional Theory
J. Biomol. Struc. Dyn., 2020, DOI: 10.1080/07391102.2020.1726818

V. N. Emel'yanenko, P. Stange, J. Feder-Kubis, S. P. Verevkin, R. Ludwig
Dissecting Intermolecular Interactions in the Condensed Phase of Ibuprofen and Related Compounds: the Specific Role and Quantification of Hydrogen Bonding and Dispersion Forces
Phys. Chem. Chem. Phys., 22, 4896-4904, 2020

E. A. Shelepova, D. Paschek, R. Ludwig, N. N. Medvedev
Comparing the Void Space and Long-Range Structure of an Ionic Liquid with a Neutral Mixture of Similar Sized Molecules
J. Mol. Liq., 299, 112121, 2020

T. Niemann, D. H. Zaitsau, A. Strate, P. Stange, R. Ludwig
Controlling "Like-Likes-Like" Charge Attraction in Hydroxy-Functionalized Ionic Liquids by Polarizability of the Cation, Interaction Strength of the Anions and Varying Alkyl Chain Length
Phys. Chem. Chem. Phys., 22, 2763-2774, 2020

H. J. Zeng, F. S. Menges, T. Niemann, A. Strate, R. Ludwig, M. A. Johnson
Chain Length Dependence of Hydrogen Bond Linkages Between Cationic Constituents in Hydroxy-Functionalized Ionic Liquids: Tracking Bulk Behavior to the Molecular Level with Cold Cluster Ion Spectroscopy
J. Phys. Chem. Lett., 11, 683-688, 2020


2019

T. Niemann, H. Li, G. G. Warr, R. Ludwig, R. Atkin
Influence of Hydrogen Bonding Between Ions of Like Charge on the Ionic Liquid Interfacial Structure at a Mica Surface
J. Phys. Chem. Lett., 10, 7368-7373, 2019

A. E. Khudozhitkov, J. Neumann, T. Niemann, D. Zaitsau, P. Stange, D. Paschek, A. G. Stepanov, D. I. Kolokolov, R. Ludwig
Hydrogen Bonding Between Ions of Like Charge in Ionic Liquids Characterized by NMR Deuteron Quadropole Coupling Constants - Comparison with Salt Bridges and Molecular Systems
Angew. Chem., 131, 18027-18035, 2019
Angew. Chem. Int. Ed., 58, 17863-17871, 2019

A. E. Khudozhitkov, V. Overbeck, P. Stange, A. Strate, D. Zaitsau, A. Appelhagen, D. Michalik, A. G. Stepanov, D. I. Kolokolov, D. Paschek, R. Ludwig
Simultaneous Determination of Deuteron Quadrupole Coupling Constants and Rotational Correlation Times: The Model Case of Hydrogen Bonded Ionic Liquids
Phys. Chem. Chem. Phys., 21, 25597-25605, 2019

D. H. Zaitsau, J. Neumann, T. Niemann, A. Strate, D. Paschek, S. P. Verevkin, R. Ludwig
Isolating the Role of Hydrogen Bonding in Hydroxyl-Functionalized Ionic Liquids by Means of Vaporization Enthalpies, Infrared Spectroscopy and Molecular Dynamics Simulation
Phys. Chem. Chem. Phys., 21, 20308-20314, 2019

T. Niemann, A. Strate, R. Ludwig, H. J. Zeng, F. S. Menges, M. A. Johnson
Cooperatively Enhanced Hydrogen Bonds in Ionic Liquids: Closing the Loop with Molecular Mimics of Hydroxy-Functionalized Cations
Phys. Chem. Chem. Phys., 21, 18092-18098, 2019

M. N. Nguyen, U. Kragl, D. Michalik, R. Ludwig, D. Hollmann
The Effect of Additives on the Viscosity and Dissolution of Cellulose in Tetrabutylphosphonium Hydroxide
ChemSusChem, 12, 3458-3462, 2019

T. Niemann, J. Neumann, P. Stange, S. Gärtner, T. G. A. Youngs, D. Paschek, G. G. Warr, R. Atkin, R. Ludwig
The Double-Faced Nature of Hydrogen Bonding in Hydroxy-Functionalized Ionic Liquids Shown by Neutron Diffraction and Molecular Dynamics Simulations
Angew. Chem., 131, 13019-13024, 2019
Angew. Chem. Int. Ed., 58, 12887-12892. 2019

D. H. Zaitsau, V. N. Emel'yanenko, P. Stange, S. P. Verevkin, R. Ludwig
Dissecting the Vaporization Enthalpies of Ionic Liquids by Exclusively Experimental Methods: Coulomb Interaction, Hydrogen Bonding, and Dispersion Forces
Angew. Chem. Int. Ed., 58, 8589-8592, 2019

S. A. Khan, A. adhikari, K. Ayub, A. Farooq, S. Mahar, M. N. Qureshi, A. Rauf, B. Khan, R. Ludwig, T. Mahmood
Isolation, Characterization and DFT Studies of Epoxy Ring Containing New Withanolides from Withania Coagulans Dunal
Spectrochim. Acta A, 217, 133-121, 2019

T. Niemann, P. Stange, A. Strate, R. Ludwig
When Hydrogen Bonding Overcomes Coulomb Repulsion: From Kinetic to Thermodynamic Stability of Cationic Dimers
Phys. Chem. Chem. Phys. 21, 8215-8220, 2019

B. Saima, N. Khan, Y. S. S. Al-Faiyz, R. Ludwig, W. Rehman, M. Habib-ur-Rehman, N. S. Sheikh, K. Ayub
Photo-Tunable Linear and Nonlinear Optical Response of Cyclophanediene-Dihydropyrene Photoswitches
J. Mol. Graph. Model., 88, 261-272, 2019

E. Oberem, A. F. Roesel, A. Rosas-Hernández, T. Kull, S. Fischer, A. Spannenberg, H. Junge, M. Beller, R. Ludwig, M. Roemelt, R. Francke
Mechanistic Insights Into the Electrochemical Reduction of CO2 Catalyzed by Iron Cyclopentadienine Complexes
Organometallics, 38, 1236-1247, 2019

S. Abbas, K. Ayub, M. Sohail, S. Ali, R. Ludwig, M. A. Nadeem, S. Muhammad
Synthesis, X-Ray Crystal Structure and Spin Polarized DFT Study of High Spin Mn Based Metal-Organic Framework
J. Mol. Struc., 1175, 439-44, 2019

C. Steinlechner, A. F. Roesel, E. Oberem, A. Päpcke, N. Rockstroh, F. Gloaguen, S. Lochbrunner, R. Ludwig, A. Spannenberg, H. Junge, R. Francke, M. Beller
Selective Earth-Abundant System for CO2 Reduction: Comparing Photo- and Electrocatalytic Processes
ACS Catal., 9, 2091-2100, 2019
Correction


2018

V. Overbeck, R. Ludwig
NMR Studies of Protic Ionic Liquids
Annu. Rep. on NMR Spectro., 95, 147-190, 2018

S. Sajjad, T. Mahmood, R. Ludwig, K. Ayub
Theoretical Insight Into Structural and Electronic Properties of Cationic Scn+ (n=2-13): A Benchmark Study
Solid State Sci., 86, 60-68, 2018

T. Niemann, A. Strate, R. Ludwig, H. J. Zeng, F. S. Menges, M. A. Johnson
Spectroscopic Evidence of an Attractive Cation-Cation Interaction in Hydroxy-Functionalized Ionic Liquids: A Hydrogen-Bonded Chain-like Trimer
Angew. Chem., 130, 15590-15594, 2018
Angew. Chem. Int. Ed., 57, 15364-15368, 2018

S. Fischer, A. Roesel, A. Kammer, E. Barsch, R. Schoch, H. Junge, M. Bauer, M. Beller, R. Ludwig
Diferrate [Fe2(CO)6(μ-CO){μ-P(aryl)2}]- as Self-Assembling Iron/Phosphor-Based Catalyst for the Hydrogen Evolution Reaction in Photocatalytic Proton Reduction - Spectroscopic Insights
Chem. Eur. J., 24,16052-16065, 2018

T. Niemann, D. Zaitsau, A. Strate, A. Villinger, R. Ludwig
Cationic Clustering Influences the Phase Behaviour of Ionic Liquids
Sci. Rep., 8, 1-7, 2018

S. Munsif, Maria, S. Khan, A. Ali, M. A. Mazhar, A. Gilani, J. Iqbal, R. Ludwig, K. Ayub
Remarkable Nonlinear Optical Response of Alkali Metal Doped Aluminum Phospide and Boron Phosphide Nanoclusters
J. Mol. Liq., 271, 51-64, 2018

M. Islam, A. Hameed, K. Ayub, M. M. Naseer, J. Hussain, R. D. Alharthy, A. Asari, R. Ludwig, M. al-Rashida, Z. Shafiq
Receptor-Spacer-Fluorophore Based Couarin-Thiosemicarbazones as Anion Chemosensors with "Turn on" Response: Spectroscopic and Computational (DFT) Studies
ChemistrySelect, 3, 7633-7642, 2018

J. Steinbauer, C. Kubis, R. Ludwig, R. Werner
A Mechanistic Study on the Addition of CO2 to Epoxides Catalyzed by Ammonium- and Phosphonium Salts: A Combined Spectroscopic and Kinetic Approach
ACS Sustainable Chem. Eng., 6, 10778-10788, 2018

I. O. Isaac, I. Munir, M. Al Rashida, S. A. Ali, Z. Shafiq, M. Islam, R. Ludwig, K. Ayub, K. M. Khan, A. Hameed
Novel Acridine-Based Thiosemicarbazones as "Turn-On" Chemosensors for Selective Recognition of Fluoride Anion: A Spectroscopic and Theoretical Study
R. Soc. open sci., 5, 18046, 2018

F. S. Menges, H. J. Zeng, T. Niemann, A. Strate, R. Ludwig, M. A. Johnson
Elucidating the Microscopic Mechanics of Attractive Cation-Cation Interactions in Hydroxylfunctionalized Ionic Liquids by Isomer-Selective Vibrational Spectroscopy of the N2-Tagged, Gas Phase (M+)2NTf2-Ternary Complexes
Abstracts of papers of the american chemical society, Volume 255,
Meeting Abstract 293, 2018 255th National Meeting and Exposition of the American-Chemical-Society (CAS) - Nexus of food, energy, and water

F. S. Menges, H. J. Zeng, P. J. Kelleher, O. Gorlova, M. A. Johnson, T. Niemann, A. Strate, R. Ludwig
Structural Motifs in Cold Ternary Ion Complexes of Hydroxyl-Functionalized Ionic Liquids: Isolating the Role of Cation-Cation Interactions
J. Phys. Chem. Lett, 9, 2979-2984, 2018

T. Niemann, P. Stange, A. Strate, R. Ludwig
Like-likes-Like: Cooperative Hydrogen Bonding Overcomes Coulomb Repulsion in Cationic Clusters with Net Charges uo to Q=+6e
ChemPhysChem, 19, 1691-1695, 2018

A. Strate, J. Neumann, V. Overbeck, A.-M. Bonsa, D. Michalik, D. Paschek, R. Ludwig
Rotational and Translational Dynamics and Their Relation to Hydrogen Bond Lifetimes in an Ionic Liquid by Means of NMR Relaxation Time Experiments and Molecular Dynamics Simualtions
J. Chem. Phys., 148, 193843, 2018

M. Sawall, S. Schmode, H. Schröder, R. Ludwig, K. Neymeyr
A Chemometric Study in the Area of Feasible Solution of an Acid-Base Titration of N-Methyl-6-Oxyquinolone
RSC Adv., 8, 9922-9932, 2018

A. E. Khudozhitkov, P. Stange, A.-M. Bonsa, V. Overbeck, A. Appelhagen, A. G. Stepanov, D. I. Kolokolov, D. Paschek, R. Ludwig
Dynamical Heterogeneities in Ionic Liquids as Revealed from Deuteron NMR
Chem. Commun., 54, 3098-3101, 2018

N. Iqbal, S. A. Ali, I. Munir, S.Khan, K. Ayub, M. al-Rashida, M. Islam, Z. Shafiq, R. Ludwig, A. Hameed
Acridinedione as Selective Flouride Ion Chemosensor: A Detailed Spectroscopic Quantum Mechanical Investigation
RSC Adv. 8, 1993-2003, 2018
Correction

J. Neumann, B. Golub, L.-M. Odebrecht, R. Ludwig, D. Paschek
Revisiting Imidazolium Based Ionic Liquids: Effect of the Conformation Bias of the [NTf2] Anion Studied by Molecular Dynamics Simulations
J. Chem. Phys. 148, 193828, 2018

A. Strate, V. Overbeck, V. Lehde, J. Neumann, A.-M. Bonsa, T. Niemann, D. Paschek, D. Michalik, R. Ludwig
The Influence of Like-Charge Attraction on the Structure and Dynamics of Ionic Liquids: NMR Chemical Shifts, Quadrupole Coupling Constants, Rotational Correlation Times and Failure of Stokes-Einstein-Debye
Phys. Chem. Chem. Phys., 20, 5617–5625, 2018

T. Zentel, V. Overbeck, D. Michalik, O. Kühn, R. Ludwig
Hydrogen Bonding in Protic Ionic Liquids: Structural Correlations, Vibrational Spectroscopy, and Rotational Dynamics of Liquid Ethylammonium Nitrate
J. Phys. B: At. Mol. Opt. Phys., 51, 034002, 2018

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2017

M. Moghayedi, E. K. Goharshadi, K. Ghazvini, H. Ahmadzadeh, L. Ranjbaran, R. Masoudi, R. Ludwig
Kinetics and Mechanism of Antibacterial Activity and Cytotoxicity of Ag-RGO Nanocomposite
Colloids Surf. B Biointerfaces, 159, 366-374, 2017

A. E. Khudozhitkov, P. Stange, B. Golub, D. Paschek, A. G. Stepanov, D. I. Kolokolov, R. Ludwig
Characterization of Doubly Ionic Hydrogen Bonds in Protic Ionic Liquids by NMR Deuteron Quadrupole Coupling Constants – Differences to H-Bonds in Amides, Peptides and Proteins
Angew. Chem., 129, 14500-14505, 2017
Angew. Chem. Int. Ed., 56, 14310-14314, 2017

S. Schmode, R. Ludwig
Utilization of the Dye N-Methyl-6-Oxyquinolone as an Optical Acidometer in Molecular Solvents and Protic Ionic Liquids
Chem. Commun., 53, 10761-10764, 2017

E. Perlt, M. von Domaros, B. Kirchner, R. Ludwig, F. Weinhold
Predicting the Ionic Product of Water
Sci. Rep., 7, 2017, doi:10.1038/s41598-017-10156-w

A. Strate, T. Niemann, R. Ludwig
Controlling the Kinetic and Thermodynamic Stability of Cationic Clusters by the Addition of Molecules or Counterions
Phys. Chem. Chem. Phys., 19, 18854-18862, 2017

E. K. Goharshadi, Z. Niyazi, M. Shafee, M. B. Moghaddam, R. Ludwig, M. Namayandeh Jorabchi
Transport Properties of Graphene Quantum Dots in Glycerol and Distilled Water
J. Mol. Liq., 241, 831-838, 2017

S. Schmode, A. Petrosyan, F. Fennel, A. Villinger, S. Lochbrunner, R. Ludwig
Large Stokes Shift Ionic-Liquid Dye 
Angew. Chem. Int., 56, 8564-8567, 2017

M. J. Iqbal, R. Ludwig, K. Ayub
Phosphides or Nitrides for Better NLO Properties? A Detailed Comparative Study of Alkali Metal Doped Nano-Cages
Mater. Res. Bull., 92, 113-122, 2017

V. Lehde, A. Flint, R. Ludwig
Herstellung von Clathrat-Hydraten im Verlauf einer Unterrichtsstunde
CHEMKON, 24, 59-63, 2017

R. Dragomirova, M. Namayandeh Jorabchi, D. Paschek, S. Wohlrab
Operational Criteria for the Separation of Alkanes by Zeolite Membranes
Chem. Ing. Tech., 89, 926-934, 2017

A.-M. Bonsa, D. Paschek, D. H. Zaitsau, V. N. Emel'yanenko, S. P. Verevkin, R. Ludwig
The Relation between Vaporization Enthalpies and Viscosities: Eyring's Theory Applied to Selected Ionic Liquids
ChemPhysChem, 18, 1242-1246, 2017

H. Junge, N. Rockstroh, S. Fischer, A. Brückner, R. Ludwig, S. Lochbrunner, O. Kühn, M. Beller
Light to Hydrogen: Photocatalytic Hydrogen Generation from Water with Molecular-Defined Iron Complexes
Inorganics, 5, 2017

M. Moghayedi, E. K. Goharshadi, K. Ghazvini, H. Ahmadzadeh, R. Ludwig, M. Namayandeh Jorabchi
Improving Antibacterial Activity of Phosphomolybdic Acid Using Graphene
Mater. Chem. Phys., 188, 58-67, 2017

P. Thiele, J. Neumann, A. Westphal, R. Ludwig, A.-M. Bonsa, A. Appelhagen, P. Malcher, M. Köckerling
Electrical Energy Storage by a Magnesium-Copper-Sulfide Rechargeable Battery
J. Electrochem. Soc., 164, A770-A774, 2017

V. Lesch, D. Diddens, C. E. S. Bernardes, B. Golub, A. Dequidt, V. Zeindlhofer, M. Sega, C. Schröder
ForConX: A Forcefield Conversion Tool Based on XML
J. Comp. Chem., 38, 629-638, 2017

A.-M. Bonsa, J. K. Lehmann, A. Heintz
Partial Molar Enthalpies of Organic Solutes in the Ionic Liquid [EMIM][EtSO4]
J. Mol. Liq., 226, 96-99, 2017

D. Paschek, R. Ludwig, Jannis Samios
Editorial of Special Issue ELMG/JMLG 2015
J. Mol. Liq. 226, 1, 2017

D. Kerlé, M. Namayandeh Jorabchi, R. Ludwig, S. Wohlrab, D. Paschek
A simple guiding principle for the temperature dependence of the solubility of light gases in imidazolium-based ionic liquids derived from molecular simulations
Phys. Chem. Chem. Phys., 19, 1770-1780, 2017

M. Andérez-Fernández, L. K. Vogt, S. Fischer, W. Zhou, H. Jiao, M. Garbe, S. Elangovan, K. Junge, H. Junge, R. Ludwig, M. Beller
A Stable Manganese Pincer Catalyst for the Selective Dehydrogenation of Methanol
Angew. Chem., 129, 2, 574-577, 2017
Angew. Chem. Int. Ed., 56, 2, 559–562, 2017

A. Strate, T. Niemann, D. Michalik, R. Ludwig
When Like Charged Ions Attract in Ionic Liquids: Controlling the Formation of Cationic Clusters by the Interaction Strength of the Counterions
Angew. Chem., 129, 2, 510-514, 2017
Angew. Chem. Int. Ed., 56, 2, 496–500, 2017

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2016

M. Ishtiaq, I. Munir, M. al-Rashida, Maria, K. Ayub, J. Iqbal, R. Ludwig, K. M. Khan, S. A. Ali, A. Hameed
Novel Quinoxaline Based Chemosensors with Selective Dual Mode of Action: Nucleophilic Addition and Host-Guest Type Complex Formation
RSC Advances, 6, 64009-64018, 2016

R. Ludwig, J. Wagner, M. Beller, A. Brückner, U. Kragl, O. Kühn
Editorial of the PCCP Themed Issue on 'Basic Mechanisms in Energy Conversion
Phys. Chem. Chem. Phys., 18, 10680-10681, 2016

D. H. Zaitsau, V. N. Emel'yanenko, P. Stange, C. Schick, S. P. Verevkin, R. Ludwig
Dispersion and Hydrogen Bonding Rule: Why the Vaporization Enthalpies of Aprotic Ionic Liquids are Significantly Larger than those of Protic Ionic liquids
Angew. Chem., 128, 38, 11856-11860, 2016
Angew. Chem. Int. Ed., 55, 38, 11682-11686, 2016

M. Strauch, A.-M. Bonsa, B. Golub, V. Overbeck, D. Michalik, D. Paschek, R. Ludwig
Deuteron Quadrupole Coupling Constants and Reorientational Correlation Times in Protic Ionic Liquids
Phys. Chem. Chem. Phys., 18, 17788-17794, 2016

A. Rosas,   P. G. Alsabeh,   E. Barsch,   H. Junge,   R. Ludwig, M. Beller
Highly Active and Selective Photochemical Reduction of CO2 to CO using Molecular-Defined Cyclopentadienone Iron Complexes
Chem. Commun., 52, 8393-8396, 2016

S. Elangovan, C. Topf, S. Fischer, H. Jiao, A. Spannenberg, W. Baumann, R. Ludwig, K. Junge, M. Beller
Selective Catalytic Hydrogenations of Nitriles, Ketones and Aldehydes by Well-Defined Manganese Pincer Complexes
J. Am. Chem. Soc., 138, 8809–8814, 2016

R. U. Nisa, Z. Sugheer, M. A. Hashmi, M. Sharif, M. A. Gilani, R. Ludwig, T. Mahmood, J. Iqbal, K. Ayub
Theoretical Mechanistic Investigation of Zinc(II) Catalyzed Oxidative Amidation of Benzyl Alcohols with Amines
Polyhedron, 112, 34-42, 2016

R.U. Nisa, T. Mahmood, R. Ludwig, K. Ayub
Theoretical Mechanistic Investigation of Zinc(II) Catalyzed Oxidation of Alcohols to Aldehydes and Esters
RSC Advances, 6, 31876-31883, 2016

K. Ayub, R. Ludwig
Gas Hydrates Model for Mechanistic Investigation of Wittig Reaction “on Water”
RSC Advances, 6, 23448-23458, 2016

A. Knorr, P. Stange, K. Fumino, F. Weinhold, R. Ludwig
Spectroscopic Evidence for Clusters of Like-Charged Ions in Ionic Liquids Stabilized by Cooperative Hydrogen Bonding
ChemPhysChem, 17, 458-462, 2016

A. J. J. Lennox, S. Fischer, M. Jurrat, S.-P. Luo, N. Rockstroh, H. Junge, R. Ludwig, M. Beller
Copper-based Photosensitizers in Water Reduction: a more efficient in situ-formed System and improved mechanistic Understanding
Chem. Eur. J., 22, 1233-1238, 2016

C. Kubis, I. Profir, I. Fleischer, W. Baumann, D. Selent, C. Fischer, A. Spangenberg, R. Ludwig, D. Hess, R. Franke, A. Börner
In Situ FTIR- and NMR-Spectroscopic Investigations on Ruthenium-based Catalysts for Alkene Hydroformylation
Chem. Eur. J., 22, 2746-2757, 2016

P. G. Alsabeh, A. Rosas, E. Barsch, H. Junge, R. Ludwig, M. Beller
Iron-Catalyzed Photoreduction of Carbon Dioxide to Synthesis Gas
Catal. Sci. Tech., 6, 3623-3630, 2016

S. Fischer, O. S. Bokarev, E. Barsch, S. I. Bokarev, O. Kühn, R. Ludwig
Mechanistic Study of Photocatalytic Hydrogen Generation with Simple Iron Carbonyls as Water Reduction Catalysts
ChemCatChem, 8, 404-411, 2016

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2015

A. Knorr, R. Ludwig
Cation-cation clusters in ionic liquids: Cooperative hydrogen bonding overcomes like-charge repulsion
Sci. Rep., 5, 17505, 2015 

A. Knorr, K. Fumino, A.-M. Bonsa, R. Ludwig
Spectroscopic Evidence of ‘Jumping and Pecking’ of Cholinium and H-Bond Enhanced Cation–Cation Interaction in Ionic Liquids
Phys. Chem. Chem. Phys., 17, 30978-30982, 2015

S. Chatzipapadopoulos, T. Zentel, R. Ludwig, M. Lütgens, S. Lochbrunner, O. Kühn
Vibrational Dephasing in Ionic Liquids as a Signature of Hydrogen Bonding
ChemPhysChem, 16, 12, 2519–2523, 2015

N. Khan, N.S. Sheikh, A.F. Khan, R. Ludwig, T. Mahmood, W. Rehman, Y.S.S. Al-Faiyz, K. Ayub
Towards Thermally Stable Cyclophanediene-Dihydropyrene Photoswitches
J Mol Model., 21(6), 148, 2015

H. K. Stassen, R. Ludwig, A. Wulf, J. Dupont
Imidazolium Salt Ion Pairs in Solution
Chem. Eur. J., 21, 8324–8335, 2015

R. Ludwig
The Effect of Dispersion Forces on the Interaction Energies and Far Infrared Spectra of Protic Ionic Liquids
Phys. Chem. Chem. Phys., 17, 13790-13793, 2015

T. U. Rahman, G. Uddin, R. U. Nisa, R. Ludwig, W. Liaqat, T. Mahmood, G. Mohammad, M. I. Choudhary, K. Ayub
Spectroscopic and Density Functional Theory Studies of 7-Hydroxy-3′-Methoxyisoflavone: A new Isoflavone from the Seeds of Indigofera Heterantha (Wall)
Spectrochim. Acta Mol. Biomol. Spectrsoc., 148, 375–381, 2015

T. U. Rahman, M. Arfan, T. Mahmood, W. Liaqat, M. A. Gilani, G. Uddin, R. Ludwig, K. Zaman, M. I. Choudhary, K. F. Khattak, K. Ayub
Isolation, Spectroscopic and Density Functional Theory Studies of 7-(4-Methoxyphenyl)-9H-Furo[2,3-f]Chromen-9-one: A new Flavonoid from the Bark of Millettia Ovalifolia
Spectrochim. Acta Mol. Biomol. Spectrosc., 146, 24–32, 2015

D. Paschek, B. Golub, R. Ludwig
Hydrogen Bonding in a Mixture of Protic Ionic Liquids: a Molecular Dynamics Simulation Study
Phys. Chem. Chem. Phys., 17, 8431-8440, 2015

K. Fumino, A.-M. Bonsa, B. Golub, D. Paschek, R. Ludwig
Non-Ideal Mixing Behaviour of Hydrogen Bonding in Mixtures of Protic Ionic Liquids
ChemPhysChem, 16, 2, 299–304, 2015

K. Fumino, V. Fossog, P. Stange, D. Paschek, R. Hempelmann, R. Ludwig
Controlling the Subtle Energy Balance in Protic Ionic Liquids: Dispersion Forces Compete with Hydrogen Bonds
Angew. Chem., 127, 9, 2834–2837, 2015
Angew. Chem. Int. Ed., 54, 9, 2792–2795, 2015

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2014

D. Paschek, R. Ludwig
Advancing into Water’s “No Man’s Land”: Two Liquid States?
Angew. Chem., 126, 44, 11888-1890, 2014
Angew. Chem. Int. Ed., 53, 44, 11699–11701, 2014

E. Herold, M. Strauch, D. Michalik, A. Appelhagen, R. Ludwig
Dynamics of Methanol in Ionic Liquids: Validity of the Stokes-Einstein and Stokes-Einstein-Debye Relations
ChemPhysChem, 15, 3040–3048, 2014

C. Godemann, E. Barsch, A. Spannenberg, R. Ludwig, T. Beweries
Synthesis and Characterisation of Bridged Titanocene Oxido Complexes and Their Reactions with Water
Eur. J. Inorg. Chem., 25, 4068–4072, 2014

D. Mellmann, E. Barsch, M. Bauer, K. Grabow, A. Boddien, A. Kammer, P. Sponholz, U. Bentrup, R. Jackstell, H. Junge, G. Laurenczy, R. Ludwig, M. Beller
Base-Free Non-Noble Metal Catalyzed Hydrogen Generation from Formic Acid – Scope and Mechanistic Insights
Chem. Eur. J., 20, 13589–13602, 2014

V. N. Emelýanenko, G. Boeck, S. P. Verevkin, R. Ludwig
Volatile Times for the very First Ionic Liquid: Understanding Vapor Pressures and Enthalpies of Vaporization of Ethylammonium Nitrate
Chem. Eur. J., 20, 11640–11645, 2014

C. Kubis, M. Sawall, A. Block, K. Neymeyr, R. Ludwig, A. Börner, D. Selent
An Operando FTIR Spectroscopic and Kinetic Study of Carbon Monoxide Pressure Influence on Rhodium-Catalyzed Olefin Hydroformylation
Chem. Eur. J., 20, 11921-11931, 2014

K. Fumino, V. Fossog, P. Stange, K. Wittler, W. Polet, R. Hempelmann, R. Ludwig
Ion Pairing in Protic Ionic Liquids Probed by Far-Infrared Spectroscopy: Effects of Solvent Polarity and Temperature
ChemPhysChem, 15, 2604 – 2609, 2014

K. Fumino, S. Reimann, R. Ludwig
Probing molecular interaction in ionic liquids by low frequency spectroscopy: Coulomb energy, hydrogen bonding and dispersion forces
Phys. Chem. Chem. Phys., 16, 21903-21929, 2014

Maria Hanif, Muhammad Hanif, Tariq Mahmood, Ralf Ludwig, Khurshid Ayub
Aromaticity of Azines Through Dyotropic Double Hydrogen Transfer Reaction
J. Mol. Model., 20, 6, 2304, 2014 

S. Reimann, P. Ehlers, A. Petrosyan, S. Kohse, A. Spannenberg, A. E. Surkus, T. V. Ghochikyan, A. S. Saghyan, S. Lochbrunner, O. Kühn, R. Ludwig, P. Langer
Site-Selective Synthesis of Pentaarylpyridines via Multiple Suzuki-Miyaura Cross-Coupling Reactions
Adv. Synth. Catal., 356, 1987 – 2008, 2014

S. Fischer, D. Hollmann, S. Tschierlei, M. Karnahl, N. Rockstroh, E. Barsch, P. Schwarzbach, S.-P. Luo, H. Junge, M. Beller, S. Lochbrunner, R. Ludwig, A. Brückner
Dead and Rebirth: Photocatalytic Hydrogen Production by a Self-Organizing Copper-Iron System
ACS Catal., 4, 1845-1849, 2014

C. Kubis, W. Baumann, E. Barsch, D. Selent, M. Sawall, R. Ludwig, D. Hess, R. Franke, A. Börner
Investigation into the Equilibrium of Iridium Catalysts for the Hydroformylation of Olefins by Combining in situ High-Pressure FTIR- and NMR-Spectroscopy
ACS Catal., 4, 2097-2108, 2014

K. Fumino, R. Ludwig
Analyzing the Interaction Energies Between Cation and Anion in Ionic Liquids: the Subtle Balance Between Coulomb Forces and Hydrogen Bonding
J. Mol. Liq., 192, 94-102, 2014

M. Strauch, C. Roth, F. Kubatzki, R. Ludwig
Formation of “Quasi” Contact or Solvent-separated Ion Pairs in the Local Environment of Probe Molecules Dissolved in Ionic Liquids
ChemPhysChem, 15, 265-270, 2014 

A. Monney, E. Barsch, P. Sponholz, H. Junge, R. Ludwig, M. Beller
Base-Free Hydrogen Generation from Methanol using a Bi-catalytic System
Chem. Comm., 50, 707-709, 2014

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2013

S. Reimann, K. Wittler, M. Sharif, S. Schmode, A. Spannenberg, R. Ludwig, P. Langer
Site-Selective Sonogashira Reactions of 1,4-Dibromo-2-(trifluoromethyl)benzene – Synthesis and Properties of Fluorinated Alkynylbenzenes.
Eur. J. Org. Chem., 13, 8115-8134, 2013

K. Fumino, P. Stange, V. Fossog, R. Hempelmann, R. Ludwig
Equilibrium of Contact and Solvent-Separated Ion-Pairs in Mixtures of Protic Ionic Liquids and Molecular Solvents Controlled by Polarity.
Angew. Chem., Vol. 125, Is. 47, 12667-12670, 2013
Angew. Chem. Int. Ed., Vol. 52, Is. 47, 12439-12442, 2013

Z. Papanyan, C. Roth, S. Reimann, R. Ludwig
The Dissolution of Polyols in Salt Solutions and Ionic Liquids at Molecular Level: Ions, Counter Ions, and Hofmeister Effects.
ChemPhysChem, 14, 3667-3671, 2013

T. Köddermann, D. Reith, R. Ludwig
Comparison of Force Fields on the Basis of Various Model Approaches—How To Design the Best Model for the [CnMIM][NTf2] Family of Ionic Liquids.
ChemPhysChem, 14, 3368-3374, 2013

S. Reimann, M. Sharif, K. Wittler, L. R. Knöpke, A.-E. Surkus, C. Roth, R. Ludwig, P. Langer
3-Pyrenylacrylates: Synthetic, Photophysical, Theoretical and Electrochemical Investigations.
Z. Naturforsch. B, 68b, 367-377, 2013

G. Wienhöfer, F. A. Westerhaus, K. Junge, R. Ludwig, M. Beller
Defined Iron-Tetraphos Catalyst for the Selective Hydrogenation of α-β-Unsaturated Aldehydes.
Chem. Eur. J., Vol. 19, Is. 24, 7701-7707, 2013

D. Kerlé, R. Ludwig, D. Paschek
The Influence of Water on the Solubility of Carbon Dioxide in Imidazolium Based Ionic Liquids.
Z. Phys. Chem., 227, 167-176, 2013

P. Stange, K. Fumino, R. Ludwig
Ion speciation of Protic Ionic Liquids in Water:  Transfer from Contact to Solvent-Separated Ion Pairs.
Angew. Chem., Vol. 125, Is. 10, 3064-3068, 2013
Angew. Chem. Int. Ed., 52, Is. 10, 2990-2994, 2013

K. Fumino, V. Fossog, K. Wittler, R. Hempelmann, R. Ludwig
Dissecting the Interaction Energy between anions and cations in Protic Ionic Liquids.
Angew. Chem., Vol. 125, Is. 8, 2425-2429, 2013
Angew. Chem. Int. Ed., Vol. 52, Is. 8, 2368-2372, 2013

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2012

C. Roth, S. Chatzipapadopoulos, D. Kerlé, F. Friedriszik, M. Lütgens, S. Lochbrunner, O. Kühn, R. Ludwig
Hydrogen Bonding in Ionic Liquids Probed by Linear and Nonlinear Vibrational Spectroscopy
New J. Phys., 14, 105026, 2012

S. Reimann, P. Ehlers, M. Sharif, K. Wittler, A. Spannenberg, R. Ludwig, P. Langer
Site-selective Sonogashira reactions of 1,2-dibromo-3,5-difluorobenzene.
Catalysis Communications, 25, 142-147, 2012

M. Sawall, A. Börner, C. Kubis, D. Selent, R. Ludwig, K. Neymeyr
Model-free multivariate curve resolution combined with model-based kinetics: algorithm and applications.
J. Chemometrics, 26, 538-548, 2012

C. Kubis, D. Selent, M. Sawall, R. Ludwig, K. Neymeyr, W. Baumann, R. Franke, A. Börner
Exploring Between the Extremes: Conversion-Dependent Kinetics of Phosphite-Modified Hydroformylation.
CatalysisChem. Eur. J., 18, 8780–8794, 2012

C. Roth, A. Rose, R. Ludwig
Ionic Liquids can be more hydrophobic than chloroform or benzene.
ChemPhysChem, 13, 1302-1305, 2012

K. Fumino, K. Wittler, R. Ludwig
The anion dependence of the interaction strength between ions in imidazolium-based ionic liquids probed by far infrared spectroscopy.
J. Phys. Chem. B, 116, 9507-9511, 2012

K. Fumino, E. Reichert, K. Wittler, R. Hempelmann, R. Ludwig
Low-Frequency Vibrational Modes of Protic Molten Salts and Ionic Liquids: Detecting and Quantifying Hydrogen Bonds.
Angew. Chem. Int. Ed., published online, 2012

C. Roth, A. Appelhagen, N. Jobst, R. Ludwig
Microheterogeneities in Ionic-Liquid–Methanol Solutions Studied by FTIR Spectroscopy, DFT Calculations and Molecular Dynamics Simulations.
ChemPhysChem, 13, 1708-1717, 2012

T. Köddermann, S. Klembt, D. Klasen, D. Paschek, U. Kragl, R. Ludwig
The Effect of Neutral Ion Aggregate Formation on the Electrical Conductivity of an Ionic Liquid and its Mixtures with Chloroform.
ChemPhysChem, 13, 1748-1752, 2012

D. H. Zaitsau, K. Fumino, V. N. Emelyanenko, A. V. Yermalayeu, R. Ludwig, S. P. Verevkin
Structure-Property Relationships in ILs: A Study of the Anion Dependence in Vaporisation Enthalpies of Imidazolium Based Ionic Liquids.
ChemPhysChem, 13, 1868-1876, 2012

R. Ludwig, E. Maginn, S. Balasubramanian
Ionic Liquids: The Fundamentals and Forces Driving Their Rise.
ChemPhysChem, 13, 1603-1605, 2012

N. Eleya, I. Malik, S. Reimann, K. Wittler, M. Hein, T. Patonay, A. Villinger, R. Ludwig, P. Langer
Efficient Synthesis of Arylated Flavones by Site-Selective Suzuki–Miyaura Cross-Coupling Reactions of the Bis(triflate) of 5,7- and 7,8-Dihydroxyflavone.
Eur. J. Org. Chem., 8, 1639-1652, 2012

Z. Hassan, A. Villinger, S. Reimann, K. Wittler, R. Ludwig, A. Villinger, P. Langer
Cyclization of 1,4-Phenylenediacrylic Acid with Thionyl Chloride and Subsequent Suzuki-Miyaura Reactions Revisited. The Products are Benzo[1,2-b;5,6-b']dithiophenes and not Benzo[1,2-b;4,5-b']dithiophenes.
Adv. Synth. Catal., 354, 4, 731-739, 2012

S. Reimann, M. Sharif, M. Hein, A. Villinger, K. Wittler, R. Ludwig, P. Langer
Site-Selective Sonogashira Reactions of 1,4-Dibromo-2-fluorobenzene - Synthesis and Properties of Fluorinated Alkynylbenzenes.
Eur. J. Org. Chem., 3, 604-615, 2012

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2011

S. Reimann, M. Sharif, K. Wittler, L. R. Knöpke, A.-E. Surkus, C. Roth, A. Villinger, R. Ludwig, P. Langer
1-(Arylalkenyl)pyrenes: Synthesis, Structure, Photophysical, Theoretical and Electrochemical Investigations.
Eur. J. Org. Chem., 27, 5261-5271 2011

J.D. Hollmann, F. Gärtner, R. Ludwig, E. Barsch, H. Junge, M. Blug, S. Hoch, M. Beller, A. Brückner
Insights into the Mechanism of Photocatalytic Water Reduction by DFT-Supported In-situ-EPR/Raman-Sepctroscopy.
Angew. Chem.,123, 10429-10433, 2011
Angew. Chem. Int. Ed., 50, 10246-10250, 2011 (Backside Cover)

A. Boddien, D. Mellmann, F. Gärtner, R. Jackstell, H. Junge, P. J. Dyson, G. Laurenczy, R. Ludwig, M. Beller
Efficient Dehydrogenation of Formic Acid using an Iron Catalyst.
Science, 333, 1733-1736, 2011

Z. Papanyan, C. Roth, D. Paschek, R. Ludwig
Understanding the dissolution power of Ionic Liquids using the example of a well-defined model compound.
ChemPhysChem, 12, 2400-2404, 2011

J.Riemenschneider, R. Ludwig
Comment on "Isotope effects in liquid water by infrared spectroscopy. IV. No free OH groups in liquid water.
J. Chem. Phys., 135, 117101, 2011

S. Reimann, M. Sharif, K. Wittler, L. R. Knöpke, A.-E. Surkus, C. Roth, A. Villinger, R. Ludwig, P. Langer
1-(Arylalkenyl)pyrenes: Synthesis, Structure, Photophysical, Theoretical and Electrochemical Investigations.
Eur. J. Org. Chem., 2011, 5261–5271, 2011

K. Fumino, T. Peppel, M. Geppert-Rybczynska, D. H. Zaitsau, J. K. Lehmann, S. P. Verevkin, M. Köckerling, R. Ludwig
The influence of hydrogen bonding on the physical properties of ionic liquids.
Phys. Chem. Chem. Phys., 13, 14064-14075, 2011

T. Peppel, C. Roth, K. Fumino, D. Paschek, M. Köckerling, R. Ludwig
The role of hydrogen bonding defects on the properties of ionic liquids.
Angew. Chem., 123, 6791–6795, 2011
Angew. Chem. Int. Ed., 50, 6661–6665, 2011

F. Gärtner, A. Boddien, E. Barsch, K. Fumino, S. Losse, H. Junge, D. Hollmann, A. Brückner, R. Ludwig, M. Beller
Phototcatalytic Hydrogen Generation from Water with Iron Carbonyl Phosphine Complexes: Improved Water Reduction Catalysis and Mechanistic Insights.
Chem. Eur. J., 17, 6425-6436, 2011

A. Heintz, R. Ludwig, E. Schmidt
Limiting diffusion coefficients of ionic liquids in water and methanol: A combined experimental and molecular dynamics study.
Phys. Chem. Chem. Phys., 13, 3268-3273, 2011

C. Hohenstein, D. Kadzimirsz, R. Ludwig, A. Kornath
Synthesis and Characterization of Tetramethylammonium Trifluorosulfate.
Chem. Eur. J., 17, 925-929, 2011

R. Ludwig, D. Paschek
Cavity model challenged: The hydrated electron is localized in areas of enhanced water density.
ChemPhysChem, 12, 75-77, 2011

D. Paschek, R. Ludwig
Specific Ion effects on water structure and dynamics beyond the first hydration shell.
Angew. Chem., 123, 368-370, 2011
Angew. Chem. Int. Ed., 50, 352-353, 2011

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2010

A. Christiansen, C. Li, M. Garland, D. Selent, R. Ludwig, R. Franke, A. Börner
Secondary Phosphane Oxides as Preligands in Rhodium-Catalyzed Hydroformylation
ChemCatChem, 2, 1278-1285, 2010

C. Hohenstein, F. Neumann, R. Ludwig, A. Kornath
Preparation and Properties of Dimethyltetrafluorophosphate.
Inorg. Chem., 49, 6421-6427, 2010

A. Boddien, F. Gärtner, C. Torborg, K. Fumino, H. Junge, R. Ludwig, M. Beller
Iron-Catalyzed Hydrogen Production from Formic Acid.
J. Am. Chem. Soc., 132, 8924–8934, 2010

K. Fumino, A. Wulf, S. Verevkin, A. Heintz, R. Ludwig
Estimating enthalpies of vaporization of imidazolium-based ionic liquids from far infrared measurements.
ChemPhysChem., 11, 1623-1626, 2010 (Inside Cover)

A. Christiansen, C. Li, M. Garland, D. Selent, R. Ludwig, A. Spannenberg, W. Baumann, R. Franke, A. Börner
On the Tautomerism of Secondary Phosphane Oxides.
Eur. J. Org. Chem., 14, 2733-2741, 2010

A. Kaufmann, A. Kornath, A. Zoermer, R. Ludwig
Small Magnesium Clusters: Between van der Waals and Valence Bond.
Inorg. Chem., 49, 3851-3856, 2010

C. Kubis, R. Ludwig, M. Sawall, K. Neymeyr, A. Börner, K.-D. Wiese, D. Hess, R. Franke, D. Selent
A Comparative In Situ HP-FTIR Spectroscopic Study of Bi- and Monodentate Phosphite-Modified Hydroformylation.
ChemCatChem, 2, 287-295, 2010 (Inside Cover)

R. Ludwig, A. Wulf, K. Fumino, P. F Taday
Combined THz, FIR and Raman spectroscopy studies of imidazoliumbased ionic liquids covering the frequency range between 2 and 300 cm-1.
ChemPhysChem, 11, 349-353, 2010

K. Fumino, A. Wulf, R. Ludwig
Comment on "New Interpretation of the CH Stretching vibrations in Imidazolium-Based Ionic Liquids.
J. Phys. Chem. A, 114,685-686, 2010

C. Roth, T. Peppel, K. Fumino, M. Köckerling, R. Ludwig
The importance of H-bonds for the structure of ionic liquids studied by single crystal X-ray diffraction, transmission and attenuated total reflection spectroscopy in the terahertz region.
Angew. Chem., 122, 10419-10423, 2010
Angew. Chem. Int. Ed., 49, 10221-10224, 2010

A. Wulf, K. Fumino, R. Ludwig
Spectroscopic evidence for an enhanced anion-cation interaction due to hydrogen bonding in pure imidazolium Ionic Liquids.
Angew. Chem., 122, 459-463, 2010
Angew. Chem. Int. Ed., 49, 449-453, 2010 (Inside Cover)

A. Boddien, F. Gärtner, R. Jackstell, H. Junge, A. Spannenberg, W. Baumann, R. Ludwig, M. Beller
ortho-metallation of Iron(0)tribenzylphosphine complexes: Homogeneous Catalysts for the Generation of Hydrogen from Formic Acid.
Angew. Chem., 122, 9177-9181, 2010
Angew. Chem. Int. Ed., 49, 8993-8996, 2010

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2009

R. Ludwig
A Simple Geometrical Explanation for the Occurence of Specific Large Aggregated Ions in some protic Ionic Liquids.
J. Phys. Chem. B, 113, 15419-15422, 2009

D. Kerlé, R. Ludwig, A. Geiger, D. Paschek
Temperature Dependence of the Solubility of Carbon Dioxide in Imidazolium-based Ionic Liquids.
J. Phys. Chem. B, 113, 12727–12735, 2009

T. Köddermann, K. Fumino, R. Ludwig, J. N. C. Lopes, A. A. H. Pádua
What far-infrared spectra can contribute to the development of force fields used in molecular dynamics simulations.
ChemPhysChem, 10, 1181-1186, 2009

J. Kuss, J. Holzmann, R. Ludwig
An Elemental Mercury Diffusion Coefficient for Natural Waters Determined by Molecular Dynamics Simulation.
Env. Sci. Tech., 43, 3183–3186, 2009

R. Ludwig, D. Paschek
Applying the inductive effect for synthesizing low melting and low viscous imidazolium-based ionic liquids.
ChemPhysChem, 10, 516-519, 2009

K. Fumino, A. Wulf, R. Ludwig.
Hydrogen Bonding in protic ionic liquids: Reminiscent of Water.
Angew. Chem., 121, 3230-3233, 2009
Angew. Chem. Int. Ed., 48, 3184-3186, 2009

J. Holzmann, A. Appelhagen and R. Ludwig
Correlation of static and dynamic heterogeneities in supercooled water by means of molecular dynamics simulations.
Z. Phys. Chem., 223, 1001-1010, 2009

J. Riemenschneider, A. Wulf and R. Ludwig
The effects of temperature and H/D isotopic dilution on the transmission and attenuated total reflection FTIR spectra of water.
Z. Phys. Chem., 223, 1011-1022, 2009

K. Fumino, A. Wulf, R. Ludwig
The potential role of hydrogen bonding in aprotic and protic ionic liquids.
Phys Chem. Chem. Phys., 11, 8790 - 8794, 2009

I. A. Shuklov, N. V. Dubrovina, E. Barsch, R. Ludwig, D. Michalik, A. Börner
Solvent dependent asymmetric hydrogenation with self-assembled catalysts: a combined catalytic, NMR- and IR-study.
Chem. Comm, 12, 1535-1537, 2009

R. Ludwig, D. Paschek
Bunsenkolloquium in Dortmund: Alte Weisheiten und neue Erkenntnisse über das Wasser.
Bunsen-Magazin, 5, 195-196, 2009

D. Paschek, J. Holzmann, R. Ludwig
Computer Simulation Studies of Heat Capacity Effects associated with Hydrophobic Effects.
Chapter in Heat Capacities: Liquids, Solutions, and Vapours, edited by E. Wilhelm and T.M. Letcher
RSC Publishing, 2009
ISBN: 978-0-85404-176-3

R. Ludwig
Nuclear spin relaxation in liquids and gases.
Chapter in Nuclear Magnetic Resonance, 38, 243-270 edited by G.A. Webb
The Royal Society of Chemistry, Cambridge, UK, 2009
ISBN: 978-1-84755-102-3

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2008

R. Winter, R. Ludwig
Editorial: The Complex Nature of Water at Molecular Interfaces.
ChemPhysChem, 9, 2635-2636, 2008

J. Holzmann, R. Ludwig, A. Geiger, D. Paschek
Temperature and concentration effects on the solvophobic solvation of methane in aqueous salt solutions.
ChemPhysChem, 9, 2722-2730, 2008

J. Riemenschneider, J. Holzmann, R. Ludwig.
Salt effects on the structure of water probed by attenuated total reflection infrared spectroscopy and molecular dynamics simulations.
ChemPhysChem, 9, 2731-2736, 2008

T. Köddermann, R. Ludwig, D. Paschek.
On the Validity of Stokes-Einstein and Stokes-Einstein-Debye Relations in Ionic Liquids and Ionic Liquids Mixtures.
ChemPhysChem, 9, 1851-1858, 2008

D. Paschek, T. Köddermann, R. Ludwig.
Solvation and solvent mediated interactions of small apolar particles in network forming liquids: Similarities between water and imidazolium based ionic liquids.
Conference Information: 236th National Meeting of the American-Chemical-Society, Philadelphia, PA
Abstracts of papers of the American Chemical Society, Volume: 236, Meeting Abstract: 264-PHYS, Published August 17th, 2008

D. Paschek, T. Köddermann, R. Ludwig
The Solvophobic Solvation and Interaction of Small Apolar Particles in Imidazolium-Based Ionic Liquids.
Phys. Rev. Lett., 100, 115901, 2008

T. Köddermann, D.Paschek, R. Ludwig.
Ionic Liquids: Dissecting the Heat of Vaporization.
ChemPhysChem, 9, 549-555, 2008

K. Fumino, A. Wulf, R. Ludwig
The cation-anion interaction in Ionic-Liquids probed by far-infrared spectroscopy.
Angew. Chem., 120, 3890-3894, 2008
Angew. Chem. Int. Ed., 47, 3830-3834, 2008

K. Fumino, A. Wulf, R. Ludwig.
Strong, localized and directional H-bonds fluidize Ionic Liquids.
Angew. Chem., 120, 8859-8863, 2008
Angew. Chem. Int. Ed., 47, 8731-8734, 2008

R. Ludwig
Thermodynamical properties of ionic lqiuids - A cluster approach.
Phys. Chem. Chem. Phys., 10, 4333-4339, 2008

R. Ludwig
Nuclear spin relaxation in liquids and gases.
Chapter in Nuclear Magnetic Resonance, 37, 180-207 edited by G.A. Webb
The Royal Society of Chemistry, Cambridge, UK, 2008
ISBN: 978-1-84755-847-3

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2007

T. Köddermann, D.Paschek, R. Ludwig
Molecular dynamics simulations of ionic liquids: A reliable description of structure, thermodynamics and dynamics.
ChemPhysChem, 8, 2464-2470, 2007

 

A. Wulf, K. Fumino, D. Michalik, R. Ludwig
IR and NMR properties of Ionic Liquids: Do they tell us the same thing?
ChemPhysChem, 8, 2265-2269, 2007

A.Wulf, R. Ludwig, P.Sasisanker, H.Weingärtner
Molecular Reorientation in Ionic Liquids. A Comparative Dielectric and Magnetic Relaxation Study.
Chem. Phys. Lett., 439, 323-326, 2007

J.R.H. Xie, J. Zhao, T. Kar, R. Ludwig
Ultraviolet optical absorption spectra of water clusters: from molecular dimer to nanoscaled cage-like hexakaidecahedron.
J. Comp. Theo. Nanoscience, 4, 453-466, 2007

R. Ludwig
The Importance of Tetrahedrally Coordinated Molecules for the Explanation of Liquid Water Properties.
ChemPhysChem., 8, 938-943, 2007

R. Ludwig.
The mechanism of the Molecular Reorientation in Water.
ChemPhysChem, 8, 44-46, 2007

R. Ludwig, U. Kragl
Do we understand the volatility of Ionic Liquids?
Angew. Chem., 119, 6702-6704, 2007
Angew. Chem. Int. Ed., 46, 6582-6584, 2007

J. Holzmann, R. Ludwig, D. Paschek, A. Geiger
Pressure and salt effects: Two sides of the same coin?
Angew. Chem., 119, 9065-9069, 2007
Angew. Chem. Int. Ed. Engl., 46, 8907-8911, 2007

C. Krempner, R. Ludwig, A. Fleming, R. Miethchen, M. Köckerling
Twisted oxygen-containing oligosilanes - unprecedented examples of sigma-n mixed conjugated systems.
Chem. Commun., 18, 1810-1812, 2007

R. Ludwig
Nuclear spin relaxation in liquids and gases.
Chapter in Nuclear Magnetic Resonance, 36, 170-195 edited by G.A. Webb
The Royal Society of Chemistry, Cambridge, UK, 2007
ISBN: 978-0-85404-362-0

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2006

T. Köddermann, C. Wertz, A. Heintz, R. Ludwig
Ion-Pair Formation in the Ionic Liquid 1-Ethyl-3-methylimidazolium bis(triflyl)imide as a Function of Temperature and Concentration.
ChemPhysChem, 7, 1944-1949, 2006

R. Ludwig
Ionic Liquids - Revolutionary Potential for Chemistry?
ChemPhysChem, 7, 1415-1416, 2006

A. Wulf, R. Ludwig
Structure and Dynamics of Water Confined in Dimethyl Sulfoxide.
ChemPhysChem, 7, 266-272, 2006

R. Ludwig
The Puzzling Properties of Supercooled and Glassy Water.
Angew. Chem., 118, 3480-3483, 2006
Angew. Chem. Int. Ed., 45, 3402-3405, 2006

T. Köddermann, C. Wertz, A. Heintz, R. Ludwig.
The Association of Water in Ionic Liquids: A Reliable Measure of Polarity.
Angew. Chem., 118, 3780-3785, 2006
Angew. Chem. Int. Ed., 45, 3697-3702, 2006

U. Jäger-Fiedler, M. Köckerling, R. Ludwig, A. Wulf, C. Krempner
Hydroxy Substituted Oligosilane Dendrimers - Controlling the Electronic Properties through Hydrogen Bonding.
Angew. Chem., 118, 6907-6911, 2006
Angew. Chem. Int. Ed., 45, 6755-6759, 2006

A. Wulf, T. Köddermann, C. Wertz, A. Heintz, R. Ludwig
Water vibrational bands as a polarity parameter in ionic liquid. 
Z. Phys. Chem., 220, 1361-1376, 2006

G.A. Webb and R. Ludwig
Nuclear spin relaxation in liquids and gases.
Chapter in Nuclear Magnetic Resonance, 35, 199-233 edited by G.A. Webb
The Royal Society of Chemistry, Cambridge, UK, 2006
ISBN: 978-1-84755-523-6

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2005

R. Ludwig
The Structure of Liquid Methanol.
ChemPhysChem., 6, 1369-1375, 2005

R. Ludwig
Isotopic Quantum Effects in Liquid Methanol.
ChemPhysChem., 6, 1376-1380, 2005

R. Ludwig, A. Appelhagen
Calculation of clathrate-like water clusters including the H2O-Buckminster fullerene: (H2O)60.
Angew. Chem., 117, 821-826, 2005
Angew. Chem. Int. Ed., 44, 811-815, 2005

R. Ludwig, D. Paschek
Wasser: Anomalien und Rätsel.
Chemie in unserer Zeit, 39, 164-175, 2005

G.A. Webb and R. Ludwig
Nuclear spin relaxation in liquids and gases.
Chapter in Nuclear Magnetic Resonance, 34, 217-252 edited by G.A. Webb
The Royal Society of Chemistry, Cambridge, UK, 2005
ISBN: 978-1-84755-390-4

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2004

M. Buehl, R. Ludwig, R. Schurhammer, G. Wipff
Hydronium Ion Complex of 18-Crown-6: Theory Confirms Three Normal Linear Bonds.
J. Phys. Chem. A, 108, 11463-11468, 2004

R. Ludwig
Protonated Water Clusters: The Third Dimension.
ChemPhysChem., 5, 1495-1497, 2004

H. Weingärtner, H. Nadolny, A. Oleinikova, and R. Ludwig
Collective Contributions to the Dielectric Relaxation of Hydrogen-Bonded Liquids.
J. Chem. Phys., 120, 11692-11697, 2004

D. Gupta, M. Huelsekopf, M. Morell Cerda, R. Ludwig, B. Lippert
Complex Formation of Isocytosine Tautomers with with PdII and PtII.
Inorg. Chem., 43, 3386-3393, 2004

T. Köddermannn, R. Ludwig
N-methylacetamide/water cluster in a hydrophobic solvent.
Phys. Chem. Chem. Phys., 6, 1867-1873, 2004

R. Ludwig, A. Geiger, R. Winter
Special Issue Editorial): Interfacial Water in Chemistry and Biology.
Phys. Chem. Chem. Phys., 6, E5, 2004

G.A. Webb and R. LudwigNuclear spin relaxation in liquids and gases.Chapter in Nuclear Magnetic Resonance, 33, 192-232 edited by G.A. WebbThe Royal Society of Chemistry, Cambridge, UK, 2004ISBN: 978-1-84755-389-8

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2003

A. Kornath, O. Blecher, F. Neumann, R. Ludwig
Vibrational Spectra of the tetramethylpnikogenonium ions.
J. Mol. Spectrosc., 219, 170-174, 2003

A. Kornath, A. Kaufmann, A. Zoermer, and R. Ludwig
Raman spectroscopic investigation of small matrix-isolated lithium clusters.
J. Chem. Phys., 118, 6957-6963, 2003

A. Kornath, F. Neumann, R. Ludwig
Structure and properties of the hydridomethyltetrafluorophosphate anion, CH3PF4H-.
Z. Anorg. Allg. Chem., 629, 609-614, 2003

A. Kornath, F. Neumann, R. Ludwig
Structure and properties of the methylpentafluorophosphate anion, CH3PF5H-.
Z. Anorg. Allg. Chem., 629, 615-620. 2003

M. Mehring, M. Schuermann, and R. Ludwig
tert-Butylphosphonic Acid: From the Bulk to the Gas Phase.
Chem. Eur. J., 9, 837-849, 2003

R. Ludwig
New Insight into the Transport Mechanism of Hydrated Hydroxide Ions in Water.
Angew. Chem., 115, 268-271, 2003
Angew. Chem. Int. Ed., 42, 258-260, 2003

R. Ludwig
How does water bind to metal surfaces: H-up or H-down?
Angew. Chem., 115, 3580-3582, 2003
Angew. Chem. Int. Ed., 42, 3458-3460, 2003

T. Koeddermann, F. Schulte, M. Huelsekopf, and R. Ludwig
Formation of Water Clusters in a Hydrophobic Solvent.
Angew. Chem., 1150, 5052-5056, 2003
Angew. Chem. Int. Ed., 42, 4904-4908, 2003

R. Ludwig
Isotopic Quantum Effects of Liquid Methanol.
published in: NIC Symposium 2004, Proceedings, Dietrich Wolf, Gernot Muenster, Manfred Krener (Editor), John von Neumann Institute for Computing, Juelich, NIC Series, 20: 61-70, 2003

G.A. Webb and R. Ludwig
Nuclear spin relaxation in liquids and gases.
Chapter in Nuclear Magnetic Resonance, 32, 201-237 edited by G.A. Webb
The Royal Society of Chemistry, Cambridge, UK, 2003
ISBN: 978-1-84755-388-1

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2002

A. Kornath, R. Ludwig and A. Zoermer
Formation of the Magic Cluster Na8 in noble gas matrixes.
Inorg. Chem., 41, 6206-6210, 2002

M. Henn, K. Jurkschat, R. Ludwig, M. Mehring, K. Peveling, and M. Schuermann
Reaction of the Pincer-type Ligand {2,6-[P(O)(OEt)2]2-4-tert-Bu-C6H2 } - with [Ph3C] +[PF 6] -. Unprecedented Rearrangement and Carbon-Carbon Bond Formation.
Z. Anorg. Allg. Chem., 628, 2940-2947, 2002

R. Ludwig
The Effect of Hydrogen Bonding on the Thermodynamic and Spectroscopic Properties of Molecular Clusters and Liquids.
Phys. Chem. Chem. Phys., 4, 5481-5487, 2002

A. Kornath, F. Neumann and R. Ludwig
Struktur und Eigenschaften von Methyltrifluorphosphoran, CH3PF3H.
Z. Anorg. Allg. Chem., 628, 1835-1840, 2002

M. Huelsekopf and R. Ludwig
Hydrogen Bonding in a Sterically Hindered Alcohol.
J. Mol. Liq., 98-99, 163-171, 2002

A. Kornath, O. Blecher and R. Ludwig
Darstellung von Tetramethylammoniumazidsulfit und Tetramethylammoniumcyanat-Schwefeldioxid-Addukt, [(CH3)4N] + [SO2N3] -, [(CH3)4N] + [SO2OCN] - und Kristallstruktur von [(CH3)4N]+ [SO2N3]-.
Z. Anorg. Allg. Chem., 628, 183-190, 2002

R. Ludwig, J. Behler, B. Klink and F. Weinhold
Molecular Composition of Liquid Sulfur.
Angew. Chem., 114, 3331-3335, 2002
Angew. Chem. Int. Ed., 41, 3199-3202, 2002

R. Ludwig and F. Weinhold
Quantum Cluster Equilibrium Theory of Liquids: Isotopically substituted QCE/3-21G Model Water.
Z. Phys. Chem., 216, 659-674, 2002

R. Winter, R. Ludwig
Struktur und Dynamik von Wasser an molekularen Grenzflächen.
In: UniReport - Berichte aus der Forschung der Universität Dortmund (ISSN 0179-7182) (Hrsg.: Der Rektor der Universität Dortmund in Verbindung mit der Gesellschaft der Freunde der Universität). Chemische Forschung in Dortmund, 33: 30-38, 2002

G.A. Webb and R. Ludwig
Nuclear spin relaxation in liquids and gases.
Chapter in Nuclear Magnetic Resonance, 31, 192-224 edited by G.A. Webb
The Royal Society of Chemistry, Cambridge, UK, 2002
ISBN: 978-1-84755-387-4

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2001

R. Minkwitz, M. Berkei and R. Ludwig
Crystal Structure of IO2F.
Inorg. Chem., 40, 6493-6495, 2001

M. Huelsekopf and R. Ludwig
Correlations between structural, NMR and IR spectroscopic properties of N-methylacetamide.
Magn. Res. Chem., 39, S127-S134, 2001

K. Peveling, M. Schuermann, R. Ludwig and K. Jurkschat
From Intramolecularly [4+1]- and [4+2]-Coordinated Tri- and Tetraorganosilanes to Hypercoordinated Benzoxasilaphospholes.
Organometallics, 20, 4654-4663, 2001

R. Ludwig.
Water: From Clusters to the Bulk.
Angew. Chem., 113, 1856-1876, 2001
Angew. Chem. Int. Ed., 40, 1808-1827, 2001

R. Minkwitz, M. Berkei and R. Ludwig
Preparation and Crystal Structure of Tetraphenylphosphonium Triiodotetrabromide [PPh4+][I3Br4-].
Inorg. Chem., 40, 25-28, 2001

G.A. Webb and R. Ludwig
Nuclear spin relaxation in liquids and gases.
Chapter in Nuclear Magnetic Resonance, 30, 181-213 edited by G.A. Webb
The Royal Society of Chemistry, Cambridge, UK, 2001
ISBN: 978-1-84755-386-7

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2000

R. Minkwitz, M. Berkei and R. Ludwig
Synthesis and characterisation of novel iodine(III) compounds and crystal structures of Methoxy(trifluoromethyl)iodine(III) chloride [CF3I(Cl)OCH3] and Diemthoxy(trifluoromethyl)iodine(III) [(CF3I(Cl)OCH3)2]
Eur. J. Inorg. Chem., 11, 2387-2392, 2000

R. Minkwitz, M. Berkei, M. Studentkowski and R. Ludwig
Crystal Structure of (Difluoro)methoxyoxo iodine(V) IF2(O)OCH3.
Inorg. Chem., 39, 4766-4768, 2000

R. Ludwig
Hexamers: From Covalently Bound Organic Structures to Hydrogen Bonded Water Clusters.
Chem. Phys. Chem., 1, 53-56, 2000

M. Huelsekopf and R. Ludwig
Temperature Dependence of Hydrogen Bonding in liquid alcohols.
J. Mol. Liq., 85, 105-125, 2000

A. Kornath, O. Blecher and R. Ludwig
Darstellung und Kristallstruktur von Tetramethylammoniumthiocyanat-Schwefeldioxid-Addukt, (CH3)4N+ SCN-.SO2.
Z. Anorg. Allg. Chem., 626, 731-735, 2000

R. Ludwig
Cooperative Hydrogen Bonding in amides and peptides.
J. Mol. Liq., 84, 65-75, 2000

R. Ludwig and A. Kornath
In spite of the chemist's belief: Carbonic Acid is surprisingly stable.
Angew. Chem., 112, 1479-1481, 2000
Angew. Chem. Int. Ed., 39, 1421-1423, 2000

R. Ludwig and F. Weinhold
Quantum Cluster Equilibrium Theory of Liquids: Light and Heavy QCE/3-21G Model Water.
Phys. Chem. Chem. Phys., 2, 1613-1619, 2000

R. Ludwig
Wasser: Von kleinen Ringen und grossen Käfigen.
In: UniReport - Berichte aus der Forschung der Universität Dortmund (ISSN 0179-7182) (Hrsg.: Der Rektor der Universität Dortmund in Verbindung mit der Gesellschaft der Freunde der Universität). Chemische Forschung in Dortmund, 31, 11-16, 2000

A. Kornath, A. Kaufmann, A. Zoermer and R. Ludwig
Growth of metal clusters in matrices.
High Temperature Materials Chemistry, 15, 345, 2000

G.A. Webb and R. Ludwig
Nuclear spin relaxation in liquids and gases.
Chapter in Nuclear Magnetic Resonance, 29, 217-250 edited by G.A. Webb
The Royal Society of Chemistry, Cambridge, UK, 2000
ISBN: 978-1-84755-385-0

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1999

R. Minkwitz, S. Reinemann and R. Ludwig
On the reaction of perfluoro-aza-propene with oxygen difluoride and fluorination of bis(trifluoromethyl)-hydroxylamine.
J. Fluorine Chem., 99, 145-149, 1999

A. Kornath, R. Ludwig and A. Zoermer.
Raman Spectroscopic Investigation of Matrix Isolated Rubidium and Cesium Molecules: Rb2, Rb3, Cs2, and Cs3
Inorg. Chem., 38, 4696-4699, 1999

R. Ludwig, F. Weinhold and T.C. Farrar
Quantum Cluster Equilibrium Theory of Liquids I: Molecular Clusters and Thermodynamics of Liquid Ethanol.
Mol. Phys., 97, 465-477, 1999

R. Laenen, K. Simeonidis and R. Ludwig.
Investigation of an H-bonded Dimer: Calculations of Bonding Structures and Temperature Dependence of the Librational Substructure of the OH-stretching Bond.
J. Chem. Phys., 111, 5897-5904, 1999

R. Ludwig, F. Weinhold and T.C. Farrar
Quantum Cluster Equilibrium Theory of Liquids II: Temperature dependent Chemical Shifts, Quadrupole Coupling Constants and Vibrational Frequencies in Liquid Ethanol.
Mol. Phys., 97, 479-486, 1999

A. Kornath, D. Kadzimirsz and R. Ludwig
Trifluorosulfite Anion, SOF3-
Inorg. Chem., 38, 3066-3069, 1999

A. Kornath, R. Ludwig and O. Blecher
Synthesis and Characterization of Tetramethylammonium Cyanosulfites, (CH3)4N+SO2CN-
J. Am. Chem. Soc., 121, 4019-4022, 1999

R. Ludwig and F. Weinhold
Quantum Cluster Equilibrium Theory of Liquids: Freezing of QCE/3-21G Water to Tetrakaidecahedral 'Bucky-Ice'.
J. Chem. Phys., 110, 508-515, 1999

N. Pieper, R. Ludwig, M. Schurmann, K. Jurkschat, M. Biesemans, I. Verbruggen, R. Willem.
Syntheses, dynamic stereochemistry, and unusual reactivity of intramolecularly coordinated organotin fluorides.
Phosphorus Sulfur and Silicon and the related Elements, 151, 305-310, 1999

B. Zobel, M Schurmann, R. Ludwig, K. Jurkschat, D. Dakternieks, A. Duthie.
Syntheses and structures of novel molecular organotin chalcogenides.
Phosphorus Sulfur and Silicon and the related Elements, 151, 325-332, 1999

G.A. Webb and R. Ludwig
Nuclear spin relaxation in liquids and gases.
Chapter in Nuclear Magnetic Resonance, 28, 208-231 edited by G.A. Webb
The Royal Society of Chemistry, Cambridge, UK, 1999
ISBN: 978-1-84755-384-3

R. Ludwig, A. Kornath
Clusterforschung - Experiment und Theorie.
In: UniReport - Berichte aus der Forschung der Universität Dortmund (ISSN 0179-7182) (Hrsg.: Der Rektor der Universitat Dortmund in Verbindung mit der Gesellschaft der Freunde der Universität). Chemische Forschung in Dortmund, Sonderheft, 116-121, 1999

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1998

R. Ludwig, O.Reis, R.Winter, F. Weinhold and T.C. Farrar
Quantum Cluster Equilibrium Theory of Liquids: Temperature dependence of hydrogen bonding in Liquid N-Methylacetamide studied by IR Spectra.
J. Phys. Chem. B, 102: 9312-9318, 1998

R. Minkwitz, S. Reinemann and R. Ludwig.
Preparation and Spectroscopic Characterization of the Difluoroaminofluoro-iminium-hexafluorometallates F2NC(F)NX2+MF6– (X = H, D; M = As, Sb)
Z. Anorg. Allg. Chem., 624: 1674-1678, 1998.

N. Scotti, F. Flacke, R. Ludwig and H. Jacobs.
Lithiumtriamidostannat(II), Li[Sn(NH2)3]; synthesis; crystal structure.
Z. Anorg. Allg. Chem., 624, 1395-1399, 1998.

A. Kornath, R. Ludwig and A. Zoerner
Small Potassium Clusters.
Angew. Chem., 110, 1620-1622, 1998
Angew. Chem. Int. Ed., 37, 1575-1577, 1998

R. Ludwig, F. Weinhold and T.C. Farrar
Quantum Cluster Equilibrium Theory of Liquids I: Molecular Clusters and Thermodynamics in Liquid Ammonia.
Ber. Bunsenges. Phys. Chem., 102, 197-204, 1998

R. Ludwig, F. Weinhold and T.C. Farrar
Quantum Cluster Equilibrium Theory of Liquids II: Temperature dependent Chemical Shifts, Quadrupole Coupling Constants and Vibrational Frequencies in Liquid Ammonia.
Ber. Bunsenges. Phys. Chem., 102, 205-212, 1998

G.A. Webb and R. Ludwig
Nuclear spin relaxation in liquids and gases.
Chapter in Nuclear Magnetic Resonance, 27, 199-221 edited by G.A. Webb
The Royal Society of Chemistry, Cambridge, UK, 1998
ISBN: 978-1-84755-383-6

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1997

R. Ludwig, F. Weinhold and T.C. Farrar
Structure of Liquid N-Methylacetamide: Temperature dependence of NMR Chemical Shifts and Quadrupole Coupling Constants.
J. Phys. Chem. A, 101, 8861-8870, 1997

A. Kornath, F. Neumann and R. Ludwig
Vibrational Spectra and Structural Aspects of Fluorosulfites.
Inorg. Chem., 36, 5570-5573, 1997

R. Minkwitz, R. Bröchler and R. Ludwig.
Tetramethylammonium difluorobromate(I), (CH3)4N+BrF2-.
Inorg. Chem., 36, 4280-4283, 1997.

R. Ludwig, F. Weinhold and T.C. Farrar
Theoretical Study of Hydrogen Bonding in Liquid and Gaseous N-Methylformamide.
J. Chem. Phys., 107, 499-507, 1997

R. Minkwitz, R. Bröchler, A. Kornath, R. Ludwig und F. Rittner
Trifluormethyl hypobromite CF3OBr.
Inorg. Chem.36, 2147-2150, 1997

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1996

R. Ludwig, F. Weinhold and T.C. Farrar
Effective O-17 Quadrupole Moments for the Calibrated Computation of Quadrupole Coupling Parameters at Different Levels of Theory.
J. Chem. Phys., 105, 8223-8230, 1996

R. Baumert, R. Ludwig and A. Geiger
Quadrupole Relaxation of the 7Li+ in Dilute Aqueous Solution Determined by Experimental and Theoretical Methods.
J. Mol. Model., 2, 379-382, 1996

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1995

R. Ludwig, F. Weinhold and T.C. Farrar
Experimental und Theoretical Determination of the Temperature Dependence of Deuteron and Oxygen Quadrupole Coupling Constants of Liquid Water.
J. Chem. Phys., 103, 6941-6950, 1995

R. Ludwig, F. Weinhold and T.C. Farrar
Temperature Dependence of Hydrogen Bonding in Neat Liquid Formamide.
J. Chem. Phys., 103, 3636-3642, 1995

R. Ludwig, J.A. Bohmann and T.C. Farrar
Correlation Times and Quadrupole Coupling Constants in Neat Liquid Formamide.
J. Phys. Chem., 99, 9681-9686, 1995

R. Ludwig
NMR relaxation studies in water-alcohol mixtures: The water-rich region.
Chem. Phys., 195, 329-337, 1995

R. Ludwig, F. Weinhold and T.C. Farrar
Experimental and Theoretical Studies of Hydrogen Bonding in Neat, Liquid Formamide.
J. Chem. Phys., 102, 5118-5125, 1995

R. Ludwig, C. Rusbüldt, P.A. Bopp and M.D. Zeidler
The Anisotropy of the Molecular Reorientational Motion in Liquid Methanol.
Z. Naturforsch. Section A, 50: 211-216, 1995

R. Ludwig, M.D. Zeidler and T.C. Farrar
Molecular Dynamics in Lower Alcohols.
Z. Phys. Chem., 189, 19-27, 1995

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1994

R. Ludwig, M.D. Zeidler and T.C. Farrar
Molecular-Dynamics of Methanol in the System Methanol Dimethyl Sulfoxide.
Z. Naturforsch. Section A, 49, 1131-1135, 1994

R. Ludwig, T.C. Farrar and M.D. Zeidler
Temperature Dependence of the Deuteron- and Oxygen Quadrupole Coupling Constants of Water in the System Water/Dimethyl Sulfoxide.
J. Phys. Chem., 98, 6684-6687, 1994

R. Ludwig and M.D. Zeidler
NMR relaxation in ethanol and propanol and in their binary mixtures with carbon-tetrachloride.
Mol. Phys., 82, 313-323, 1994

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1993

D.S. Gill, J. Singh, R. Ludwig and M.D. Zeidler
Nuclear Magnetic Resonance, Permittivity, Viscosity and Ultrasonic Velocity Measurements in Binary Mixtures of Methanol and Tetrahydrofurane.
J. Chem. Soc. Faraday Trans., 89, 3955-3958, 1993

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1992

R. Ludwig and M.D. Zeidler
NMR relaxation in binary aqueous mixtures of acetone and tetrahydrofurane.
J. Mol. Liq., 54, 181-191, 1992

R. Ludwig, D.S. Gill and M.D. Zeidler
Molecular-Reorientation of Methanol in Mixtures with Carbon-Tetrachloride.
Z. Naturforsch. Section A, 47, 857-864, 1992

R. Ludwig
NMR-Untersuchungen der molekularen Bewegungen und Wasserstoffbrücken in Methanol und Methanolgemischen.
Dissertation, 1992

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1991

R. Ludwig, D.S. Gill and M.D. Zeidler
Molecular-Reorientation in Liquid Methanol
Z. Naturforsch. Section A, 46: 89-94, 1991

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