三缺位杂多阴离子PW_9(O_(34))^(9-) 的二苯基硅衍生物的合成和表征  

Synthesis and Characterization of the Diphenylsilicion Derivatives of Trivacant Heteropolyanion α-PW_9(O_(34))^(9-)

作　　者：李明雪[1] 王敬平[1] 牛景扬[1] 

机构地区：[1]河南大学化学化工学院,河南开封475001

出　　处：《化学研究》2002年第2期8-10,共3页Chemical Research

基　　金：河南省杰出青年基金;河南省自然科学基金资助项目(编号:0 0 40 40 3 0 0和 0 0 40 3 180 0 )

摘　　要：以Na8 H[PW9O3 4 ]·nH2 O与Ph2 SiCl2 为原料于乙腈中合成了三缺位杂多阴离子的二苯基硅衍生物(TBA)3[α-A -PW9O3 4 (Ph2 Si)3 ](TBA为四丁基铵盐的缩写)(记为I),并由元素分析、红外光谱、紫外光谱对化合物进行了表征,结果表明,二苯基硅通过六个Si-O -W桥键填充到三缺位杂多阴离子的骨架上,形成了开环的饱和笼形结构.热分析结果表明,该化合物的热分解温度在 4 95.Reaction of the trivacant heteropolyanions α-A-PW 9O 34 9- with Ph 2SiCl 2 leads to the formation of the diphenylsilicion derivatives (TBA) 3[α-A-PW 9O 34 (Ph 2Si) 3]. The complex has been characterized by elemental analysis, IR and UV spectroscopy. The results reveal the fact that the title heteropolyanion consists of one α-PW 9O 34 9- framework on which are grafted by three Ph 2Si groups through six Si-O-W bridges and the heteropolyanion becomes saturated open cage structure. Thermal analysis illustrates that the complex decomposes at the temperature of ca 495.2℃.

关 键 词：二苯基硅衍生物 三缺位杂多阴离子 合成 表征 钨 磷 乙腈 

分 类 号：O627.41[理学—有机化学]