RESOLUTION OF DIFFERENT CONFORMERS OF METHOXY-TRANS-STILBENES VIA ROTATIONAL COHERENCE SPECTROSCOPY

被引：9

作者：

TROXLER, T ^{[1
]}

TOPP, MR ^{[1
]}

METZGER, BS ^{[1
]}

SPANGLER, LH ^{[1
]}

机构：

[1] MONTANA STATE UNIV,DEPT CHEM & BIOCHEM,BOZEMAN,MT 59717

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 238卷 / 4-6期

关键词：

D O I：

10.1016/0009-2614(95)00374-D

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 excitation spectra of 4-methoxy-t-stilbene (MoS) and 4-methoxy,4'-methyl-t-stilbene (MoMeS) both exhibit two electronic origin transitions, separated by 260-280 cm(-1). This suggests the presence of two structural forms, as predicted by semi-empirical quantum mechanical calculations. The two forms should be 'syn' and 'anti', where the methoxy group is coplanar with the mean plane of the aromatic molecule. Rotational coherence spectroscopy has identified the syn and anti rotamers of the two species, establishing in both cases that the syn form has the longer-wavelength absorption.

引用

页码：313 / 318

页数：6

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