Synthesis,Crystal Structure and Photoluminescence of Ethyl Coumarin-3-carboxylate Derivatives

作     者：宋立美 高建华 

作者机构：School of Chemistry and Chemical EngineeringXi’an University of Arts and Science Department of PhysicsNorthwest University 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：2014年第33卷第1期

页      面：57-64页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：supported by Xi'an science and technology plan project(No.CX12189WL16) the National Natural Science Foundation of China(No.51002119) 

主　　题：coumarin derivatives crystal structure UV-vis spectrum photoluminescence 

摘      要：The ethyl coumarin-3-carboxylate （1） and its two derivatives, ethyl 7-methoxy-2- oxo-2H-chromene-3-carboxylate （2） and ethyl 7-（3-methylbut-2-enyloxy）-2-oxo-2H-chromene-3- carboxylate（3）, were synthesized, characterized and their UV-vis spectra and photoluminescence were investigated. Compound 2 crystallizes in the monoclinic system with space group C2/c, a = 25.884（4）, b = 6.8365（11）, c = 13.816（2） A, β = 104.876（2）°, V= 2362.9（7） A3, Z = 8, Dc= 1.396 g/cm3, Mr. = 248.23, F（000） = 1040 and g = 0.108 mm-1. Compound 3 crystallizes in the monoclinic system with space group P21/c, a = 15.685（6）, b = 8.373（3）, c = i3.063（5） A, β = 111.862（6）°, V= 1592.2（10） A3, Z = 4, Dc = 1.261 g/cm3, M,.= 302.31, F（000） = 640 and p = 0.093 mm^-1. Both the absorption and emission of the two derivatives were stronger than that of ethyl coumarin-3-carboxylate due to the larger conjugation of their electron donor group moiety at the 7-position. Under ultraviolet light excitation, the two derivatives exhibit strong blue-violet emission.