The photodimerisation of the α- and β-forms of trans-cinnamic acid:: a study of single crystals by vibrational microspectroscopy

被引：30

作者：

Atkinson, SDM ^{[1
]}

Almond, MJ ^{[1
]}

Hollins, P ^{[1
]}

Jenkins, SL ^{[1
]}

机构：

[1] Univ Reading, Dept Chem, Reading RG6 2AD, Berks, England

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2003年 / 59卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

trans-cinnamic acid; truxillic acid; vibrational microspectroscopy; photodimerisation; single crystals;

D O I：

10.1016/S1386-1425(02)00208-1

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Infrared and Raman microspectroscopy have been used to follow the photodimerisation reactions of single crystals, the alpha- and beta-forms of trans-cinnamic acid. This approach allows the starting materials and products -alpha-truxillic acid that has C-i symmetry and beta-truxinic acid, which has C-s symmetry-to be identified. It also allows the topotactic nature of the reaction to be confirmed. Attempts to produce the poorly-defined unreactive gamma-form of trans-cinnamic acid resulted only in a mixture of the alpha- and beta-forms. The findings suggest a wide role for these spectroscopic methods in monitoring solid-state organic reactions. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：629 / 635

页数：7

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