MOLECULAR MOTIONS IN LIQUIDS

MOLECULAR MOTIONS

IN LIQUIDS PROCEEDINGS OF THE 24TH ANNUAL MEETING

OF THE SOCLET"E DE CHIMIE PHYSIQUE

PARIS-ORSAY, 2-6 JULY 1972

Jointly sponsored by the

ASSOCIAZIONE ITALIANA DI CHIMICA FISICA

DEUTSCHE BUNSENGESELLSCHAFT FUR PHYSIKALISCHE CHEMIE

FARADAY DIVISION OF THE CHEMICAL SOCIETY

Edited by

JEAN LASCOMBE

Laboratoire d'inJrarouge, Universite de Bordeaux I, Bordeaux, France

D. REIDEL PUBLISHING COMPANY

DORDRECHT-HOLLAND I BOSTON-U.S.A.

Library of Congress Catalog Card Number 73-91947

ISBN -13: 978-94-010-2179-1 e-ISBN -13: 978-94-010-2177-7 DOl: 10.1007/978-94-010-2177-7

Published by D. Reidel Publishing Company, P.O. Box 17, Dordrecht, Holland

Sold and distributed in the U.S.A., Canada, and Mexico by D. Reidel Publishing Company, Inc.

306 Dartmouth Street, Boston, Mass. 02116, U.S.A.

All Rights Reserved Copyright © 1974 by D. Reidel Publishing Company, Dordrecht, Holland

Softcover reprint of the hardcover 1st edition 1974

No part of this book may be reproduced in any form, by print, photoprint, microfilm, or any other means, without written permission from the publisher

TABLE OF CONTENTS

FOREWORD BY MICHEL MAGAT IX

PREFACE XI

ORGANIZING COMMITTEE XIII

ACKNOWLEDGEMENTS ~ll

LIST OF PARTICIPANTS XV

JACQUES YVON / Les problemes de I'agitation moleculaire dans les liquides 1 PETER SCHOFIELD / Theoretical Aspects of Transport Phenomena 15 JOHN LAMB / Viscoelastic and Ultrasonic Relaxation Studies Related to Mo-

lecular Motions in Liquids 29 MANUEL G. VELARDE / On Cluster Expansions and Autocorrelation Functions:

Further Remarks on the Divergence of the Density Expansion of Transport Coefficients 65

NARINDER K. AILA WADI/Evidence of Cooperative Phenomena in the Asymp-

totic Time Behavior of Correlation Functions: Self-Diffusion Coefficient of Methane 71

GENE F. MAZENKO and SIDNEY YIP / Fully Renormalized Kinetic Theory of Thermal Fluctuations in Liquids 79

HAROLD L. FRIEDMAN / Isotope Effects Upon Motions in Liquids in the

Classical Limit 87 ROBERT H. COLE / Complex Permittivity and Dipole Correlations 97 CLAUDE BROT / Mouvements orientationnels: Fonctions de correlation et

illustrations experimentales 107 H. KILP, G. KLAGES, and w. NOERPEL / The Influence of the FIR Absorption

on the Dielectric Behaviour of Rigid Polar Molecules in Very Dilute Solutions 123 PIERRE DESPLANQUES, EUGENE CONSTANT, et RENAUD FAUQUEMBER-

GUE / Utilisation de la fonction memoire dans I'interpretation des spectres

d'absorption dipolaire des molecules toupies symetriques en phase liquide 133 JEAN-LOUIS GREFFE, JOSE GOULON, JEAN BRONDEAU, et JEAN-LOUIS

RIV AIL / Champ de reaction dynamique en relaxation dielectrique, applica-tion au cas du chloroforme a 25 °C 151

JOSE GOULON, JEAN-LOUIS RIVAIL, JOHN CHAMBERLAIN, and GEORGE W.

CHANTRY / Active Intramolecular Motion in Dielectric Relaxation of Pure

Liquid Diacetyl 163 ROBERT S. WILSON / Dielectric Relaxation in Critical Polar Mixtures; Deriva-

tion of GIarum-Cole Equation by Projection Operator Method 171

VI TABLE OF CONTENTS

JEAN-PIERRE BADIALI, HUBERT CACHET, ALAIN CYROT, et JEAN-CLAUDE LES TRADE / Etude, par relaxation dielectrique, du mouvement brownien des ions dans les liquides simples 179

SAVO BRATOS, YVES GUISSANI, and JEAN-CLAUDE LEICKNAM / Molecular Vibrations in Liquids 187

J. LASCOMBE, M. BESNARD, P. B. CALOINE, J. DEVAURE, et M. PERROT / Determination par spectrometrie de vibration des fonctions de correlation orientationnelles monomoleculaires dans les liquides 197

I. LAULICHT and s. MEIRMAN / Raman Spectroscopy and Molecular Reorien-tation in Liquids: CDCl3 and CH3Br 213

REINER ARNDT, R. MOOR MANN, and A. SCHAFFER / Raman Spectroscopic Studies on Temperature Dependence of Reorientational Motions of CH3J and CD3J Molecules 217

G. DOG E / Raman Spectroscopic Observation of Collective Excitation of Molec-ular Vibrations in Liquid Methyl Iodide 225

P. c. M. VAN WOERKOM, J. DE BLEYSER, and J. c. LEYTE / Intermolecular Vibrational Relaxation in Liquids, Measured by the Isotopic Dilution Method 233

J. P. PERCHARD, C. PERCHARD, et D. LEGAY / Mouvements moleculaires du sulfure de carbonyle a l'etat dissous par spectrometries Raman et infrarouge 235

B. BORSTNIK, D. PUMPERNIK, and A. AZMAN / Vibrational and Reorienta-tional Relaxation of Hydrogen-Bonded Systems 241

WALTER G. ROTHSCHILD / Vibrational Relaxation in Liquid and Solid Quin-~~ W

JEAN-CLAUDE LEICKNAM et YVES GUISSANI / Fonctions de correlation tensorielles: formalisme general pour les molecules polyatomiques en solution et application au cas de la diffusion du rotateur asymetrique 257

K. MULLER, P. ETIQUE, and F. KNEUBUHL / The Influence of Vibration-Rot a-tion Coupling on Correlation Functions of Molecules 265

S. SUNDER and R. E. D. MCCLUNG / Raman Studies of Molecular Reorientation in Liquid Sulfur Hexafluoride 273

M. GILBERTet M. DRIFFORD / Etude dynamique par diffusion Raman-laser des hexafluorures de metaux et metalloldes 279

J. P. MARSAULT, F. MARSAULT-HERAIL, J. L. SAULNIER, et G. LEVI / Re­orientation de molecules toupie symetrique CH3D et CD3H dissoutes dans des fluides simples du point triple au point critique 287

JOSETTE VINCENT-GEl SSE et CATHERINE DREYFUS / Moments de bandes et fonctions de correlation rotationnelles en infrarouge pour une vibration per-pendiculaire d'une molecule lineaire 295

JANINE SOUSSEN-JACOB, JOSETTE VINCENT-GEISSE, CATHERINE ALLIOT, ANNE-MARIE BIZE, JEAN-CLAUDE BRIQUET, ELISE DERVIL, JACQUELINE LOISEL, etJEAN-PAU L PINAN-LUCARRE / Etude des mouvements molecul-aires dans les liquides au moyen du profil des bandes de vibration dans l'infra­rouge 301

TABLE OF CONTENTS VII

N. I. REZAEV / The Temperature Effect on the Width and Intensity of the Raman Spectra 309

PATRICK DORVAL et PIERRE SA UMAGNE / Etude par spectroscopie infrarouge et par spectroscopie Raman des fluctuations orientationnelles de la molecule de furanne en solution 319

JAMES E. GRIFFITHS / Anisotropy in Molecular Reorientational Motions in Simple Liquids 327

H. G. HERTZ / Translational Motions as Studied by Nuclear Magnetic Reso-nance 337

JIRI JONAS, J. DEZW AAN, and J. H. CAMPBELL / Nuclear Magnetic Resonance Relaxation Studies of Reorientational Motions in Liquids at High Pressure 359

G. MARTINI, M. ROMANELLI, and L. BURLAMACCHI / Electron Spin Relaxa-tion in the Study of the Motions of Paramagnetic Probes in Liquids 371

R. ECKERT, G. LOOS, and H. SILLESCU / Association and Anisotropic Molec-ular Reorientation in Liquids as Studied by NMR 385

R. MILLS / Self-Diffusion Measurements in Simple and Complex Liquids 391 A. LOEWENSTEIN, E. GLASER, and R. ADER / Study of Molecular Motions in

Liquid Methylamines by Nuclear Magnetic Resonance, II 403 TASSO SPRINGER / Investigation of Molecular Liquids by Neutron Spectro-

scopy 411 MANFRED D. ZEIDLER / Comparative Study of Molecular Motion in Liquids

by NMR and Neutron Spectroscopy 421 J. C. LASSEGUES and J. W. WHITE / Inelastic Neutron Scattering by Chemical

Reactions. I: Structure and High Frequency Dynamics of Trifluoroacetic Acids 439

K. CARNEIRO, M. NIELSEN, and J. P. MCT AGUE / Collective Excitations in Liquid Hydrogen Observed by Coherent Neutron Scattering 461

LOUP VERLET / Molecular Dynamics: Computer 'Experiments' on Simple ~ui& ~

F. H. STILLINGER and A. RAHMAN / Molecular Dynamics Calculation of Neutron Inelastic Scattering from Water 479

J. H. R. CLARKE, S. MILLER, and L. V. WOODCOCK / Computation and Inter-pretation of the Spectroscopic Properties of Liquids 495

s. H. CHEN, Y. LEFEVRE, G. MA ZENKO, and P. A. EGELSTAFF / Pressure Dependence of the Incoherent Scattering Law and the Time-Dependent Triplet Correlation Function in Dense Hydrogen Gas 507

PIERRE LALLEMAND I Etude des mouvements mo1ckulaires par diffusion de la lumiere 517

J. P. MUNCH et s. CANDAU I Etude des mecanismes de relaxation de vibration dans Ie tetrachlorure de carbone et Ie chloroforme liquides par analyse des spectres de diffusion Brillouin 535

NAHUM D. GERSHON and IRWIN OPPENHEIM / Molecular Motion in Liquids from Low Frequency Depolarized Light Scattering 553

VIII TABLE OF CONTENTS

B. KASPROWICZ-KIELICH, S. KIELICH, etJ. R. LALANNE / Apport des proces­sus de redistribution et de reorientation moleculaire dans les effets electro-optiques non lineaires 563

C. DEMOULIN, C. J. MONTROSE, et N. OSTROWSKY / Etude des proprietes viscoelastiques d'un liquide par diffusion de la lumiere 575

J. V. CHAMPION and D. A. JACKSON / The Spectrum of Light Scattered from Liquid n-Alkanes 585

B. Y. BAHARUDIN, D. A. JACKSON, and P. E. SCHOEN / Brillouin Scattering in the Inert-Gas Liquids: Argon and Krypton 597

J. DILL and T. A. LITOVITZ / Rayleigh Scattering: Density Dependence of Orientational Motions in Acetone and Benzene 605

MANSEL DAVIES I Far Infra-Red Absorptions in Non-Dipolar Liquids 615 u. BUONTEMPO, s. CUNSOLO, P. DORE, and G. JACUCCI / Rototranslational

Spectrum of H2 in Liquid A and Comparison Between Intercollisional Inter-ference in Para-H2 and Rare Gases 637

D. FRENKEL, R. M. V AN AALST, and J. VAN DER ELSKEN / Interpretation of Far Infrared Spectra in Terms of a Collision Distribution 647

ULRICH STUMPER / Dielectric Absorption of Non-Polar Liquids in the Micro-wave and Far Infrared Region 655

FOREWORD

When, in my capacity as President of the Societe de Chimie physique, I opened the 24th Annual Meeting of this Society, devoted this year to 'molecular motions in liquids', I was stirred by a particular emotion. This had two reasons, one general and the other rather personal. I would like to give an explanation in the Foreword to this volume of communications to the Meeting and their ensuing discussions.

An essential characteristic of science is its international nature. It is like a symphony composed of contributions by all the countries playing together as an orchestra in unison. Just as a melody has different 'colours' when played by strings or woodwinds, so there exist similar 'colour' differences, subtle ones, between scientific contributions from different countries, rooted as they are in their own cultural history and liable to impoverish the ensemble if they should cease to participate. I have always had an impression of marked 'colour' differences prevailing among American, Russian, Japanese and European contributions, although within the latter group the timbre is very much the same. This is why I have dreamed of a European 'chamber orchestra' in addition to the great world orchestra.

I am very pleased, therefore, to announce that this European 'chamber orchestra' is in the formative stage and that it is happening in physical chemistry. Beginning in 1974, there will be a joint European meeting every other year, of physical chemists from the Bunsengesellschaft, the Faraday Division, the Societe de Chi~ie Physique and, I hope, the recently formed Italian Association of Chemical Physics; each of these societies cancelled its own annual meeting this year.

The present meeting may be considered as the general rehearsal of forthcoming European meetings. In fact, once the subject, place and date of the present meeting had been decided on by the Societe de Chimie Physique, we rapidly became aware of the interest aroused, and the number of contributions grew far beyond our capacity. We invited our three sister-organizations to assist us in the selection of contributions and the scientific organization of the meeting, and we can hardly be grateful enough for the assistance given to the Organizing Committee by their representatives, Messrs Hertz, Mansel Davies, and Paoloni.

The more personal reason for my desire to say a few words is that forty years of study and finding my way have gone by since T first read Schrodinger's article on the liquid state in the Handbuch der Physik. This article exposed the gap between our understanding of the crystalline and gaseous states on one hand, and our lack of understanding of the liquid state on the other. This was one of the inducements that led me into the field of physical chemistry with hopes of contributing something sig­nificant to our knowledge of the liquid state. I did not succeed in materializing this 'significant contribution', the dream of every young researcher, although in the course

x FOREWORD

of forty years I devoted my efforts to the problem whenever an opportunity arose, and my interest has remained lively. So I have been very much aware of the progress of our knowledge, accumulated especially in the past thirty years, of the liquid state and particularly of the molecular motions in liquids. This progress owes as much to the development of new concepts, autocorrelations and molecular dynamics, as to the further perfection of more established methods such as dielectric dispersion, in­frared and Raman spectroscopy and Rayleigh scattering, and to the appearance of new methods of investigation such as inelastic neutron scattering and ultrasonic sound propagation.

I believe that the contributions to this congress constitute a unique account of our knowledge to date. This knowledge has reached a level that justifies our hopes that the forthcoming decade may bring us a general theory of the liquid state connecting the molecular and macroscopic properties, unless it is impossible to derive such a theory. I hope that this will not be the case.

MICHEL MAGA T

President of the Societe de Chimie physique

PREFACE

In the past forty years, the increase in knowledge on stationary states of molecules undoubtedly constitutes one of the most spectacular developments of molecular physical chemistry. This field is still the subject of active research, owing to the re­finement of spectroscopic methods and to the possibilities of high speed calculations.

However, a new direction of research is currently being developed in which not only the stationary states are considered, but also the fluctuations of these states. This new approach holds interest to many aspects in physical chemistry, and especially so in the study of the liquid state. In a classical approach, only the average short range structures of the liquid molecules are formulated, but it is clearly evident that such an approach is essentially lacking, since the most fundamental properties of a liquid are related to transport phenomena.

To be able to study the liquid state on a microphysical scale as a function of time, it was necessary to develop the applications of statistical mechanics. Specialists in nuclear magnetic resonance (one of the most recent developments in spectroscopy) were quick to exploit these theories. Also, previous works such as those reported by Cabannes, Daure and Rousset on depolarized Rayleigh scattering in liquids have been reinterpreted in the light of these new theories. These theories are currently being ap­plied by active research in the study of various spectral profiles, the determination of relaxation times and by computer simulation of molecular dynamics.

The purpose of the 'Molecular motions in liquids' conference in Or say was to establish an up-to-date account of results obtained. We hope that this conference will enable physical chemists to have a general view of these problems and that it will stimulate the interest for further work in this field. It is also hoped that this will lead to a better understanding of the process of physicochemical transformations in the liquid state.

J. LASCOMBE

ORGANIZING COMMITTEE

J. Lascombe, President

P. Barchewitz, S. Bratos, C. Brot, R. Cerf, M. Davies, G. Hertz, L. Volino,

P. Lallemand, J.-c. Lestrade, M. Magat, D. Massignon, L. Paoloni

J.-L. Rivail, L. Verlet, C. Troyanowsky, Secretaire general.

ACKNOWLEDGEMENTS

The 24th Annual Meeting of the Societe de Chimie physique was organized with the financial help of the following organizations:

- Ministere des Affaires etrangeres Direction generale des relations culturelles

- Ministere de l'Education nationale: Direction de la Cooperation universitaire internationale

- Delegation generale a la recherche scientifique et technique - Direction des recherches et moyens d'essais - Commissariat a I'Energie atomique

and the following firms and industrial groups:

- Compagnie fran<;aise de raffinage - Compagnie generale d'electricite - Institut fran<;ais du petrole - Societe l' Air liquide - Societe Kodak PatM - Union des industries chimiques

We should like to renew our thanks to all the above.

LIST OF PARTICIPANTS

Ailawadi, N. K., Inst. f. Theoretische Physics, 1 Berlin 33, Arnimallee 3, R.F.A. Arndt, R., Inst. f. Physika1ische Chemie, D 33 Braunschweig, Gottingstrasse, R.F.A. Badiali, J. P., Physique des liquides et electrochimie, 2 place Jussieu, Paris, F Balcou, Y., Departement de physique cristalline et chimie structurale, Univ. Ren-

nes,F Barbut, E. S. P. C. I., Resonance magnetique, 10 rue Vauquelin, Paris, F Beguin, Cermo, B. P. 53, 38041 Grenoble Cedex, F Bernard, J., Chimie physique, Faculte des sciences, 32 rue Megevaud, 25000 Besancon, F Bertoluzza, A., Istituto Chimico Ciamician, Via Selmi 2, Bologna, Italia Besnard, Spectroscopie infrarouge, Universite de Bordeaux I, 33405 Talence, F Bonamy, L., Physique moleculaire, Faculte des sciences, La Bouloie, 25000 Besancon, F Bordewijk, P., Gorlaeus Laboratoria der Rijksuniversiteit, Postbus 75, Leiden,

Pays Bas Borstnik, B., Kemijski Institut Borisa Kidrica, Ljubljana, Yugoslavia Bottreau, Optique ultra-hertzienne, Universite de Bordeaux I, 33405 Talence, F Bourgou, Laboratoire de physique de l'Ecole Normale Superieure de Tunis Bourret, Chimie structurale USTL, Place E. Bataillon, 34060 Montpellier Cedex Bovee, W., Univ. of Technology, Department of Physics, Lorentzweg 1, Delft,

Pays Bas Bratos, S., Physique theorique des liquides, 4 place Jussieu, 75005 Paris, F Briant, J., I.F.P., 4 avenue de Bois Preau, 92502 Rueil Malmaison Briguet, Spectroscopie et Luminescence, UER de physique, Universite de Lyon, F Brondeau, J., Chimie theorique, Case Officielle n° 140, 54037 Nancy Cedex, F Brot, C., Physique Matiere condensee, Faculte des sciences, 06 Nice, F Brun, Interactions moleculaires, Universite des sciences et techniques, Montpellier Buback, M., Inst. f. Physikalische Chemie und Elektrochemie, D 7505, Ettlingen,

R.F.A. Buontempo, U., U.R. Fisica Moleco1are e Superfluidi Istituto di Fisica G. Marconi,

Roma, Italia Burlamacchi, L., Istituto di Chi mica Fisica, Via Gino Capponi, 9 Firenze, Ita1ia Cachet, H., Physique des liquides et electrochimie, 2 place Jussieu, 75005 Paris Carneiro, K., AEC Ris0, OK 4000 Roskilde, Oanemark Champion, J., Physics Department, City of London Polytechnic, Jewry Street,

London EC3N Z EY Chanu, 1., Thermodynamique des milieux ioniques et biologiques, Univ. Paris VII Charles, Physique appliquee, Univ. des sciences et techniques du Languedoc, 34

Montpellier

XVI LIST OF PARTICIPANTS

Chen, S. H., Nuclear Engineering Department, M.LT., Cambridge, Mass. 02139, U.S.A.

Cole, R. H., Chemistry Department, Brown University, Providence, R.L U.S.A. Constant, E., Centre de recherches sur les proprietes hyperfrequences des milieux

condenses, 59000 Lille Cunsolo, S., Instituto di Fisica, P.delle Scienze 5, Roma Cyrot, A., Physique des liquides et electrochimie, 2 place Jussieu, Paris, F Dansas, P., PhYSique de la matiere condensee. Parc Valrose, 06034 Nice Cedex, F Davies, G. J., R 383, Post office research dept, Dollis Hill, London NW2 7 DT, G.B. Davies, M., Chemistry Department, University of Wales, Aberystwyth, G.B. Delmau, J., Spectroscopie et luminescence, Universite Lyon I, F Depeyre, D., Institut de chimie, Ecole centrale, 92290 Chihenay-Malabry Desplanques, P., Centre de recherches sur les proprietes hyperfrequences des milieux

condenses, B.P.36, 59 Villeneuve d'Ascq Devaure, J., Spectroscopie infrarouge, Univ. de Bordeaux, 33405 Talence, F Djabourov, M., EPCL Resonance magnetique, 10 rue Vauquelin, 75005 Paris, F Doge, G., Inst. f. Physikalische Chemie, Technische UniversiHit, Braunschweig, R.F.A. Dorfmuller, lnstitut f. Physikalische Chemie der T. U., 3 Hannover, Calinstrasse 46,

R.F.A. Dorval, P., Spectrochimie moleculaire, 74 rue A. France, 29200 Brest, F Drifford, M., Chimie physique, CEN Saclay, 91190 Gif s/Yvette Dupeyrat, R., Spectroscopie Raman, Tour 22, Universite Paris VI, F Duplan, J. C., Spectroscopie hertzienne, UER Physique, Lyon I, F Dupuy, J., Physique des materiaux, Univ. Claude Bernard, Lyon Villeurbanne, F DWOlkin, A., Physico- chimie des rayonnements, Centre d'Orsay, 91405 Orsay, F Fauquembergue, R., Centre de recherches sur les proprietes hyperfrequences des

Milieux condenses, B.P. 36, 59 Villeneuve d'Ascq Frenkel, D., Laboratorium voor Fysische Chemie, Nwe Prinsengracht 126,

Amsterdam, P. B. Friedman, H. L., Department of Chemistry, State University of New York, Stony

Brook, N.Y. 11790, U.S.A. Gerschel, A., Physico-chimie des rayonnements (Orsay), Physique de la matiere

condensee (Nice) Gershon, N. D., The University of the Negev, Beer Sheva, Israel Goulon, 1., Laboratoire de chimie theorique, Universite de Nancy de Graaf, L. A., Interuniversitair Reactor Instituut, Berlageweg 15, Delft, Hollande Greffe, J. L., Chimie theorique, Universite Nancy I, F Griffiths, J. E., Bell Telephone Laboratories, Murray Hill, New Jersey, U.S.A. Harris, K. R., Chemistry Dpt, Simon Fraser University, Burnaby 2, B.C., Canada Hautecler, S., C.E.N.jS.C.K., Boeretang 200, B-2400 MOL, Belgique Hertz, G. H., Institut f. Physikalische Chemie, 75 Karlsruhe, Kaiserstrasse 12, R.F.A. Hoare, M. R., Dpt. of Physics, Bedford College, Regent's Park, London NWI 4 NS,

G.B.

LIST OF PARTICIPANTS XVII

Huron, M. J., Institut fran~ais du petrole, B.P. 18, 92502 Rueil Malmaison, F Hurwic, J., Chimie des dielectriques, Universite de Provence, 3 place V. Hugo, 13031

Marseille Jacucci, G., Instituto di Fisica, Roma, Italia Jackson, D. A., Physics Dpt, University of Kent, Canterbury, G.B. Janik, J., Instytut Fizyki Jadrowej, Krakow, 31342 Pologne Jonas, J., Dept. of Chemistry, Universite of Illinois, Urbana, Illinois, U.S.A. Josien, M. L., Spectrochimie moleculaire, 8 rue Cuvier, Paris, F Kilp, H., Institut f. Physik, Johannes-Gutenberg-UniversiHit, Mainz, R.F.A. Kneubiihl, F., Physics Dept., ETH, Zurich, Suisse Kranck, Laboratoire de biophysique, universite de Nice, F Laforgue, D., Electrochimie, Faculte des sciences, 51062 Reims Cedex Lalanne, J. R., Centre de recherches Paul Pascal 33 Talence, F Lallemand, P., Ecole Normale Superieure, 24 rue Lhomond, 75005 Paris, F Lamb, J., Dept. of Electronics & Electrical Engineering, The University, G12 8QQ,

Glasgow, Scotland Lantelme, F., Laboratoire d'electrochimie, Universite de Paris VI Lascombe, J., Laboratoire infrarouge, Universite de Bordeaux I Lassegues, J. C., Physical Chemistry Laboratory, South Parks Road, Oxford, G.B. Laszlo, P., Chimie organique physique, Universite de Liege, Belgique Laulicht, 1., Dept. of Physics, Bar-Ilan University, Ramat-Gan, Israel Leicknam, J. c., Physique theorique des liquides, Paris VI, F Lemanceau, B., Centre de recherches Paul Pascal, 33 Talence, F Lestrade, J. C., Physique des liquides et electrochimie, 2 place Jussieu, 75005 Paris Lindheimer, Interactions moleculaires, Faculte des sciences, 34 Montpellier, F Litovitz, T. A., Physics Dpt.. Catholic University of America, Washington, D.C.,

U.S.A. Loewenstein, A., Chemistry Dept., Technion, Haifa, Israel McClung, R. E. D., Dept. of Chemistry, University of Alberta, Edmonton, Alberta,

Canada Magat, M., Physico-chimie des rayonnements, Orsay, F Marsault, J. P., Physique experimentale moleculaire, Universite Paris VI Martinez, A., Thermodynamique et physique moleculaire, 64016 Pau Martini, G., Institute of Physical Chemistry, University of Florence, Via G. Capponi 9 Massignon, D., DPCjCentre d'etudes nudeaires, Saday Mathieu, J. P., Department de recherches physiques, Tour 22, Universite de Paris VI Mazenko, G. F., Department of Nuclear Engineering, M.LT., Harvard University,

U.S.A. Meirman, S., Dept. of Physics, Bar-Han University, Ramat-Gan, Israel Michielsen, J., Laboratorium voor Elektrochemie, Plantage Muidergracht 14,

Amsterdam, P.B. Mills, R., Research school of physical sciences, Australia National University,

Canberra, Australia

XVIll LIST OF PARTICIPANTS

Misguich, J. H., STGI/CEA, B.P. N° 6, 92 Fontenay aux Roses Monnerie, L., Physico-chimie structurale et moleculaire, E.S.P.C.!', 10 rue Vauquelin

75005 Paris Morand, G., Physique generale, Tour 12,9 quai Saint-Bernard, Paris Morrow, J. C., Dept. of Chemistry, University of North Carolina, Chapel Hill,

North Carolina, U.S.A. Mueller, K., Physics Dept., ETH, Zurich, Switzerland Munch, J. P., Acoustique moleculaire. 4 rue Blaise Pascal, 67070 Strasbourg Natkaniec, I., Institute Laue-Langevin, B.P. 156, Centre de tri 38 Grenoble Nguyen, Minh Hoang. Physique moleculaire, Besan\(on Nguyen, Van Thanh, Laboratoire d'infrarouge, Bat 350, Campus d'Orsay, 91 Orsay Noerpel, W., Institut f. Physik der Universitiit, 6202 Wiesbaden-Biebrich Riehlstr. 12,

Mainz, R.F.A. Nouchi, G., Optique moleculaire, Universite de Bordeaux I, 33405 Talence Oksengorn, B., Laboratoire des Interactions moIeculaires et des Hautes Pression,

92 Bellevue O'Reilly, P., Argonne National Laboratory, Argonne, 111., U.S.A. Ostrowsky, N., Ecole normale superieure, 75005 Paris Ouillon, Spectroscopie Raman, Universite Paris VI, 4 place Jussieu, 75005 Paris Papoular, CRTBT, BP 166. Cedex 38042 Grenoble Gare Perrot, M., Spectroscopie infrarouge et Raman, Universite de Bordeaux 1,33 Talence Posch, H. A., Physikalisches Institut Strudlhofgasse 4, 1090 Wien, Autriche Pourprix, B., Centre de recherches sur les proprietes hyperfrequences des milieux

condenses, 59650 Villeneuve d' Ascq. Quintard, P., Physique moleculaire, Faculte des sciences, 87100 Limoges Rahman, A., Argonne National Lab., 9700 South Cass Avenue, Argonne, 111.60439,

U.S.A. Regnier, J., Chimie structurale, U.S.T., Montpellier, Cedex 34060 Rezaev, N.!., Physics Department, State University, 117234 Moscow, U.R.S.S. Rivail, J. L., Chimie theorique, Universite de Nancy 1, Romero, F., Facultad de Ciencias Universidad, Sevilla, Espana Rossi, I., Infrarouge. Universite Paris VI, 91405 Orsay Roth, E., Dept. de recherche et analyse, CEA, C.E.N. Saclay, B.P. N° 2, 91 Gif

s/Yvette Rothschild, W. G., Scientific Research Staff, Ford Motor Cy, Dearborn, Michigan

48121 U.S.A. Rubalcava, H., Dept. of chemistry, University College, Dublin 4, Ireland Rull, L. F., Facultad de Ciencias Universidad de Sevilla, Espana, Saumagne, P., Spectrochimie moleculaire, Universite de Bretagne Occidentale Brest Schlaak, Spectroscopie infrarouge, Universite de Bordeaux, 33 Talence Schoen, P. E., Physics Lab., University of Kent, Canterbury, Kent, G.B. Schofield, P., Theoretical Physics Division, AERE, Harwell, Didcot, Berks, G.B. Sempere, R., Chimie structurale, Faculte des sciences, 34 Montpellier

LIST OF PARTICIPANTS XIX

Sillescu, R., Institut f. Physikalische Chemie, Robert Mayer Strasse 11, 6 Frankfurt, RF.A.

Soussen-Jacob, J., Departement de recherches physiques, Universite Paris VI, 75230 Paris

Springer, T., Institut f. Festkorperforschung der Kernforschungsanlage, Jiilich, R.F.A. Stumper, U., III Physikalisches Institut der Universitat, D 34 Gottingen, RF.A. Sundelof, L. 0., Institute of Physical Chemistry, University of Uppsala, Suede Szasz, G., General Electric, 37 Pelikanstrasse, CH 8001 ZUrich, Switzerland Taylor, A. D., Physical Chemistry Laboratory, University of Oxford, G.B. Ter-Minassian, L., Physico-chimie des surfaces et des membranes, Paris Tete, A., Thermodynamique des sels fondus, Universite de Provence, 13013 Marseille Tilenschi, S., Chimie physique des macromolecules et des colloides, Fac. de chimie,

Bucarest Totelin, c., Chimie organique physique, Universite de Liege, Belgique Troyanowsky, C., E.P.c.I., Chimie physique, 10 rue Vauquelin, 75005 Paris Turq, P., Electrochimie, Paris VI, 8 rue Cuvier, 75005 Paris Uebersfeld, J., Physique et metrologie des oscillateurs du C.N.RS. Vallauri, R., Laboratorio elettronica quantistica, via Panciatichi, 56/30 Firenze,

Italia Van Aalst, R. M., Laboratorium voor Fysische Chemie, Amsterdam, P.B. Van Dael, Laboratorium voor Molekuulfysika, 3030 Reverlee, Belgique Van Wechem, Laboratorium voor Electrochemie, Universiteit van Amsterdam,

P.B. Van Woerkom, P. C. M., Gorlaeus Laboratorium Afdeling Fysische Chemie III,

Leiden, P.B. Velarde, M., Universidad Autonoma de Madrid, Departamento de Fisica, Espagne Verkerk, P., Interuniversitair Reactor Institut, Berlageweg 15, Delft, P.B. Verlet, L., Physique theorique et hautes energies, 91405 Orsay Vesely, F., Physikalisches Institut der Universitat, Wien, Autriche Vicq, G., Optique uItra-hertzienne, Universite de Bordeaux 1, Talence Vincent-Geisse, J., Departement de recherches physiques, service infrarouge, univ.

Paris VI Viossat, Spectroscopie Raman, Departement de physique, Tunis Belvedere Volino, F., Institut Laue Langevin, 38042 Grenoble Cedex Vorderwisch, P., HMI Reaktor, D 1000 Berlin, 39 Glienickerstrasse 100, RF.A. Weulersse, P., Departement de physique, Faculte des sciences de Tunis White, J. W., Physical Chemistry Lab., South Parks Road, Oxford, OXI, 3QZ, G.B. Wilson, R S., Michael Faraday Laboratories, Chemistry Dept., Northern Illinois

Univ. Illinois, U.S.A. Woodcock, L, School of Chemistry, Leeds University, Leeds LS2 9JT, G.B. Yarwood, J., Chemistry Dept., University of Durham, Durham City, G.B. Yip, S., M.LT., Cambridge, Mass. 02138, U.S.A. Yvon, J., Commissariat a l'Energie Atomique, 33 rue de la Federation, 75015 Paris

xx LIST OF PARTICIPANTS

Zeidler, M., Inst. Physikalische Chemie, Lehrstuhl II, 75 Karlsruhe, Kaiserstrasse 12, R.F.A.

Zmerli, A., Departement de physique, Faculte des sciences El Menzah, Tunis Zoppi, M., Laboratorio di Elettronica Quantistica del C.N.R., 50127 Firenze, Italia