Gas phase infrared spectra of flavone and its derivates

被引：15

作者：

Vavra, Andreas ^{[1
]}

Linder, Rolf ^{[1
]}

Kleinermanns, Karl ^{[1
]}

机构：

[1] Univ Dusseldorf, Inst Chem Phys, D-40225 Dusseldorf NRW, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2008年 / 463卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2008.08.087

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：

We present the first gas phase Fourier transform infrared (FTIR) spectra of flavone, 3-hydroxyflavone, 5-hydroxyflavone, 6-hydroxyflavone and 3-methoxyflavone by using a fast thermal heating technique to vaporize them without decomposition. The intramolecular OH center dot center dot center dot O = C hydrogen bond strength increases from 3HF (5-ring) to 5HF (6-ring) as evidenced by the increasing red-shift and band width of the OH stretch vibration. C = O stretch and OH in-plane bend motions are coupled in the 5- and 6-rings and give rise to two intense IR bands in the range 1600-1700 cm(1). 6HF is not able to form an intramolecular hydrogen bond. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：349 / 352

页数：4

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