REVERSIBLE INTRAMOLECULAR PROTON-TRANSFER REACTIONS OF ELECTRONICALLY EXCITED DOUBLE BENZOXAZOLES - A DIRECT OBSERVATION OF THE EFFECT OF THE INTRINSIC BARRIER

被引：34

作者：

GRABOWSKA, A ^{[1
]}

MORDZINSKI, A ^{[1
]}

TAMAI, N ^{[1
]}

YOSHIHARA, K ^{[1
]}

机构：

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

来源：

CHEMICAL PHYSICS LETTERS | 1990年 / 169卷 / 05期

关键词：

D O I：

10.1016/0009-2614(90)87076-4

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：

Picosecond kinetics of excited-state single- or double-proton transfer along intramolecular hydrogen bonds were analyzed for three molecules: 2,5-bis-(2-benzoxazolyl)hydroquinone, its monomethoxy-derivative and 3,6-bis-(2-benzoxazolyl)pyrocatechol. Forward and back proton-transfer rate constants were determined. They are all of the order of 1010 s-1, i.e. considerably lower than expected for this class of reactions. © 1990.

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页码：450 / 456

页数：7

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