The Mechanism of Occurrence of Cooperative Properties in Conjugate Hydrogen Bonds
作者:
G.V. Yukhnevich,
期刊:
Spectroscopy Letters
(Taylor Available online 1997)
卷期:
Volume 30,
issue 5
页码: 901-914
ISSN:0038-7010
年代: 1997
DOI:10.1080/00387019708001637
出版商: Taylor & Francis Group
关键词: hydrogen bond;cooperative properties;force constants;vibrational spectra;molecular complexes
数据来源: Taylor
摘要:
The literature data on the change of vHXfrequencies in hydrogen-bonded complexes of different structure are analysed. It is shown that the earlier found frequency dependencies can have a simple physical explanation. It consists in the fact that the XH-bond of any molecule, apart from its proton-donor and proton-acceptor properties, also has certain transmission abilities. It means that when hydrogen bonds are conjugated, to the proton-donor ability of any XH-group is always added a certain part (specific for this XH-group) of the proton-donor ability of the molecule, in relation to which this XH-group acts as a proton-acceptor. Similarly, the proton-acceptor property of XH-group is increased by a certain part (specific for this XH-group) of the proton-acceptor ability of the molecule, in relation to which this XH-group acts as the proton-donor. The dependence of the proton-donor (proton-acceptor) ability on the bend of the angle adjacent to the hydrogen bond is found.
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