NMR-STUDY OF PROTON DYNAMICS IN THE NHO HYDROGEN-BONDS IN THE THERMOCHROMIC CRYSTALS OF N-SALICYLIDENEANILINES

被引：34

作者：

TAKEDA, S ^{[1
]}

CHIHARA, H ^{[1
]}

INABE, T ^{[1
]}

MITANI, T ^{[1
]}

MARUYAMA, Y ^{[1
]}

机构：

[1] INST MOLEC SCI,OKAZAKI,AICHI 444,JAPAN

来源：

CHEMICAL PHYSICS LETTERS | 1992年 / 189卷 / 01期

关键词：

D O I：

10.1016/0009-2614(92)85145-Z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The precise investigation of the spin-lattice relaxation rate of the proton of the remarkably thermochromic crystal of N,N'-bis(salicylidene)-p-phenylenediamine provides unique information of proton dynamics in the NHO hydrogen bonds, which is consistent with the temperature dependence of the visible absorption spectra of this crystal and which reveals the presence of interaction between two NHO hydrogen bonds in the molecule through rearrangement of the configuration of pi-electrons. This result indicates that the thermochromism of this material is a prototype of "proton-electron cooperation". The transfer rate of proton in the NHO hydrogen bond is strongly affected by a chemical modification, e.g. the fast tunneling.

引用

页码：13 / 17

页数：5

共 15 条

[1]

ABRAGAM A, 1961, PRINCIPLES NUCLEAR M, pCH8

[2] N-14 QUADRUPOLE COUPLING IN THERMOCHROMIC AND PHOTOCHROMIC N-SALICYLIDENEANILINES [J].