Hydrothermal Synthesis and Crystal Structure of a Novel Composite Keggin-type Arsenotungstate: [Ni(phen)_2][Hphen](AsW_(12)O_(40))  

作　　者：WANG Jing-Ping WANG Wei NIUJing-Yang 

机构地区：[1]Institute of Molecular and Crystal Engineering, School of Chemistryand Chemical Engineering, Henan University, Kaifeng 475001, China

出　　处：《Chinese Journal of Structural Chemistry》2007年第2期194-198,共5页结构化学（英文）

基　　金：This work was supported by the National Natural Science Foundation of China, Specialized Research Fund for the Doctoral Program of Higher Education, Henan Innovation Project for University Prominent Research Talents, Program for New Century Excellent Talents in Universities of Henan Province, the Foundation of Educational Department of Henan Province and Natural Science Foundation of Henan Province

摘　　要：A novel polyoxometalate-based composite compound [Ni（phen）2][Hphen]（AsW12040） （phen = 1,10-phenanthroline） I has been hydrothermally synthesized and characterized by elemental analysis, IR, TGA, ESR spectroscopy and single-crystal X-ray diffraction. Each structure unit of 1 consists of one polyoxoanion AsW12O40^3-, one free phenanthroline molecule and one coordination cation [Ni（phen）2]^2＋. The title compound crystallizes in the orthorhombic system, space group F212121, with a = 12.2383（7）, b = 21.0884（11）, c = 22.3237（12） A, V= 5761.4（5） A^3, Mr = 3520.44, Z = 4, Dc = 4.059 g/cm^3, F（000） = 6204, g（MoKα） = 24.844 mm^-1, GOF = 1.022, the final R = 0.0376 and wR = 0.0742 （I 〉 2σ（I）） for 865 parameters and 9637 observed reflections with I 〉 2σ（I）.A novel polyoxometalate-based composite compound [Ni（phen）2][Hphen]（AsW12040） （phen = 1,10-phenanthroline） I has been hydrothermally synthesized and characterized by elemental analysis, IR, TGA, ESR spectroscopy and single-crystal X-ray diffraction. Each structure unit of 1 consists of one polyoxoanion AsW12O40^3-, one free phenanthroline molecule and one coordination cation [Ni（phen）2]^2＋. The title compound crystallizes in the orthorhombic system, space group F212121, with a = 12.2383（7）, b = 21.0884（11）, c = 22.3237（12） A, V= 5761.4（5） A^3, Mr = 3520.44, Z = 4, Dc = 4.059 g/cm^3, F（000） = 6204, g（MoKα） = 24.844 mm^-1, GOF = 1.022, the final R = 0.0376 and wR = 0.0742 （I 〉 2σ（I）） for 865 parameters and 9637 observed reflections with I 〉 2σ（I）.

关 键 词：POLYOXOTUNGSTATE hydrothermal synthesis Keggin structure ESR 

分 类 号：O614.813[理学—无机化学]