一维链状夹心型铋(Ⅲ)钨酸盐的合成及光谱性质研究  

Synthesis and spectral study of one-dimensional chainlike compound constructed from the sandwich-type polyoxoanion

作　　者：甘雄 蔡成翔[2] 沈玉芳[3] 李道聪[3] 黄元乔[3] 彭正合[3] 

机构地区：[1]钦州学院化学系,广西钦州535000 [2]百色学院化学系,广西百色533000 [3]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《化学试剂》2008年第8期594-596,599,共4页Chemical Reagents

摘　　要：在常规条件下合成了标题化合物:Na10{[(Zn(H2O)3)2(WO2)2(BiW9O33)2]}.21.5H2O,并通过X-射线单晶结构分析、元素分析、红外光谱,紫外光谱和荧光光谱对其晶体进行表征。结果表明,标题化合物属于单斜晶系,空间群P2(1)/n,晶胞参数a=1.287 86(26)nm,b=2.516 63(50)nm,c=1.612 85(32)nm,β=94.04(3),°V=5.214 36(1 120)nm3,Z=2,最后一致性因子为R1=0.054 1,ωR2=0.120 6。紫外光谱显示,在236和293 nm有两个金属氧酸盐的特征吸收峰;用λex=241 nm的光激发后,在292.96和391.07 nm处产生发射峰。还对标题化合物进行了量子化学计算,用于说明其结构特征。An one-dimensional inorganic polyoxometalate chain constructed from dimefic bismuth tungstate： Na10 { [ （Zn（ H2O）3）2-（WO2）2（BiW9O33）2]}[·21.5 H2O has been synthesized and characterized by IR spectroscopy, elemental analysis, UV spectroscopy, fluorescence spectroscopy and single-crystal X-ray diffractometry. Crystal data for compound were ： space group, monoclinic,P2（1）/n, a = 1.287 86（26） nm, b = 2.516 63（50） nm, c= 1.612 85（32） nm, β = 94.04（3）°, V = 5.214 36（1120） nm^3, Z = 2, R1 = 0.054 1,ωR2 = 0. 120 6. In the UV spectra, there were two characteristic peaks of Keggin polyoxoanion at 236 and 293 nm. The fluorescence spectra of target compound had been studied,showing two emission peaks at 293 nm and 391 nm excited by 241 nm. Finally, the quantum chemistry calculation of target compound was performed to explain the structural characteristics.

关 键 词：多金属氧酸盐 铋 光谱性质 

分 类 号：O614[理学—无机化学]