基于[Cr_3O(OOCC_2H_5)_6(H_2O)_3]^+和α-Keggin多金属氧簇的微孔化合物的合成和晶体结构(英文)  

Synthesis and structure of microporous compound derived from [Cr_3O(OOCC_2H_5)_6(H_2O)_3]^+ and α-Keggin polyoxomolybdate

作　　者：于丽[1] 杨东辉[1] 张东娣[1,2] 马鹏涛[1] 

机构地区：[1]河南大学化学化工学院,河南开封475004 [2]河南大学药学院,河南开封475004

出　　处：《化学研究》2013年第1期7-11,共5页Chemical Research

摘　　要：以H4SiMo12O40.nH2O和[Cr3O(OOCC2H5)6(H2O)3]NO3.nH2O等为原料,合成了一例新颖的微孔化合物K2[Cr3O(OOCC2H5)6(H2O)3]2[SiMo12O40].1.5HAc.6H2O;利用X射线衍射仪、X射线光电子能谱仪、红外光谱仪及紫外光谱仪分析了产物的晶体结构和分子结构.结果表明,合成的化合物属于三斜晶系,P-1(2)空间群,晶胞参数为a=1.299 64(5)nm,b=1.299 64(5)nm,c=2.090 26(8)nm,α=76.406 0(10)°,β=74.126 0(10)°,γ=79.658 0(10)°,Z=2.就其分子结构而言,阴、阳离子通过K+离子的桥联作用形成一维链状结构,而相邻链之间通过氢键形成二维层状结构.A novel microporous compound, K2 [Cr30 （OOCC2 H5 ） 6 （ H2 O） 3 ]2 [- SiMo12 O40 ]· 1.5 HAc ＂6H2 O, was synthesized by the complexation of Keggin-type [-a-SiMQ2 04o]4- polyoxo- molybdate ion with maerocation [Cr30 （OOCC2 H5 ）6 （H2 O）3 ]＋. The crystal structure and chemical structure of as-synthesized compound were analyzed by single crystal X-ray diffrac- tion, X-ray photoelectron spectroscopy, infrared spectrometry and ultraviolet spectrometry. Results show that as-synthesized compound belongs to triclinic system of space group P-1（2）, with crystal cell parameters of a = 1. 299 64（5） nm, b = 1. 299 64（5） nm, c = 2. 090 26（8） nm, a = 76. 406 0（10）°,β= 74. 1260（10）°, 7= 79. 658 0（10）° andZ= 2. In terms of the molecular structure, the macroeation and polyoxomolybdate are connected with each other through two K＋ cations forming a one dimensional chain, and the neighboring chains are fur- ther interconnected into a two dimensional layer by hydrogen bonding interactions.

关 键 词：多钼氧簇 大阳离子 微孔化合物 合成 晶体结构 

分 类 号：O627.12[理学—有机化学]