New benzimidazolic 3-hydroxychromone derivative with two alternative mechanisms of the excited state intramolecular proton transfer reaction

被引：24
|
作者：
Svechkarev, Denis A. [1 ]
Baumer, Vyacheslav N. [2 ]
Syzova, Zoya A. [1 ]
Doroshenko, Andrey O. [1 ]
机构：
[1] Kharkov VN Karazin Natl Univ, Inst Chem, UA-61077 Kharkov, Ukraine
[2] Natl Acad Sci Ukraine, NTK Inst Single Crystals, UA-61001 Kharkov, Ukraine
来源：
JOURNAL OF MOLECULAR STRUCTURE | 2008年 / 882卷 / 1-3期
关键词：
benzimidazolic; 3-hydroxychromone; X-ray structure analysis; H-bonding; multi-band fluorescence emission; ESIPT;
D O I：
10.1016/j.molstruc.2007.09.009
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 2-(benzimidazol-2-yl) derivative of 3-hydroxychromone was synthesized and studied by X-ray structure analysis, H-1 NMR and fluorescence spectroscopy. The possibility of the alternative H-bonds formation and thus - two alternative mechanisms of the excited state intramolecular proton transfer reaction was discussed on the base of the spectral data, X-ray structure analysis and quantum-chemical calculations. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：63 / 69
页数：7
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