Simple water clusters of Coumarins 151 and 152A studied by IR-UV double resonance spectroscopy

被引：40

作者：

Palmer, PM ^{[1
]}

Chen, Y ^{[1
]}

Topp, MR ^{[1
]}

机构：

[1] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 318卷 / 4-5期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0009-2614(00)00036-1

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 hydrogen-bonded clusters Coumarin 151/(H2O)(1) and Coumarin 152A/(H2O)(1) have been studied via IR-UV double-resonance spectroscopy. Each cluster exists in two structural forms having distinct electronic properties. Evidence is presented to show that the structures involve water hydrogen bonded to groups at opposite ends of the molecular dipole. These results were supported by semiempirical structure calculations and, for C151, by infrared measurements in the S-1 state. (C) 2000 Elsevier Science B.V. All rights reserved.

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页码：440 / 447

页数：8

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