Infrared, Raman and microwave studies of the molecular dynamics and interactions in liquid benzonitrile
作者:
F. Guillaume,
J. Yarwood,
A.H. Price,
期刊:
Molecular Physics
(Taylor Available online 1987)
卷期:
Volume 62,
issue 6
页码: 1307-1321
ISSN:0026-8976
年代: 1987
DOI:10.1080/00268978700102991
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Studies on the ‘single particle’ (infrared) and collective (far-infrared and microwave) reorientational motions of benzonitrile liquid have shown that rotation is relatively slow. The static and dynamic total dipole correlations are sensibly described by the Glarum-Powles relationship between collective and single molecule times. These correlations include (at least) a contribution from short-ranged potentials. The total dipole density correlation function is successfully described by the Lynden-Bell/Steele gaussian cage model for libration in quasi-static cages but with parameters which predict intermolecular torques smaller than for more rapidly rotating liquid phase molecules. There is also some indication of a time scale separation between collective reorientational and interaction-induced dipole fluctuations.
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