一种新的四核镍取代的夹心型锑钨酸盐H_(10)[Ni_4~Ⅱ(H_2O)_(10)(B—β—SbW_9O_(33))_2]·2H_2O的合成和晶体结构  

Synthesis and crystal structure of a new tetranuclear Ni—substituted sandwich antimoniotungstate:H_(10)[Ni_4~Ⅱ(H_2O)_(10)(B—β—SbW_9O_(33))_2]·2H2_O

作　　者：林宏艳[1] 王秀丽[1] 陈宝宽[1] 刘国成[1] 胡海良[1] 

机构地区：[1]渤海大学化学化工学院,辽宁锦州121013

出　　处：《渤海大学学报（自然科学版）》2009年第2期120-123,共4页Journal of Bohai University:Natural Science Edition

基　　金：国家自然科学基金项目(No:20871022)。

摘　　要：利用常规合成方法制备了一个四核镍夹心型锑钨酸盐H_(10)[Ni_4~Ⅱ(H_2O)_(10)(B—β—SbW_9O_(33))_2]·2H_2O。晶体衍射数据显示,该化合物属于单斜晶系,P 21/n空间群,a=12.5088 (12)(?),b=12.7578(12)(?),c=29.318(3)(?),β=101.3340(10)°,V=4587.5(8)(?)~3,Z=2,R_1 =1.092,wR_2=0.2941。晶体解析表明,该多阴离子[Ni_4~Ⅱ(H_2O)_(10)(B—β—SbW_9O_(33))_2]^(10-)(简称Ni_4(H_2O)_(10)Sb_2W_(18))由2个[SbW_9O_(33)]^(9-)亚单元和四核Ni~Ⅱ离子[Ni_4~Ⅱ(H_2O)_(10)]^(8+)连接形成的。相邻的Ni_4(H_2O)_(10)Sb_2W_(18)之间通过弱的氢键作用连接形成二维层状结构。A new 2D layer supramolecular compound, H10[Ni4^Ⅱ（H2O）10（B-β-SbW9O33）2]·2H2O, has been synthesized under open--air reaction conditions, and characterized by ICP, IR, TG and single crystal X--ray diffraction analysis. Result reveals that the compound belongs to monoclinic system with P 21/n space group. The cell parameters are： a=12.5088（12）A,b=12.7578（12）A,c=29.318（3）A,β=101.3340（10）°,V=4587.5（8）A^3,Z=2,R1=1.092,wR2=0.2941. The polyoxometalate ions [Ni4^Ⅱ（H2O）10（B-β-SbW9O33）2]^10-（noted Ni4（H2O）10Sb2W18）） consists of two [SbW9O33]^9- and one [Ni4^Ⅱ（H2O）10]^＋8. The 2D supramolecular layer was formed through the weak hydrogen bonding interactions between the adjacent Ni4（H2O）10Sb2W18.

关 键 词：多金属氧酸盐 晶体结构 超分子网络 锑钨酸盐 

分 类 号：O621.3[理学—有机化学]