New Dimeric Selenidoarsenate(III):Solvothermal Synthesis and Crystal Structure of [Co(en)_3]_2As_2Se_5

作     者：JIA Ding-Xian ZHAO Qian-Xin SONG Li-Feng ZHANG Yong DAI Jie 

作者机构：Department of Chemistry and Chemical Engineering Suzhou University Suzhou 215006 China 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：2006年第25卷第9期

页      面：1110-1114页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：Supported by the Natural Science Foundation of Universities of Jiangsu Province (05KJB150110) 

主　　题：solvothermal synthesis crystal structure selenidoarsenate ethylenediamine 

摘      要：A new selenidoarsenate [Co（en）3]2As2Se5 1 （en = ethylenediamine） was synthesized by a reaction of AsCI3, CoCl2-6H2O and Se in en under mild solvothermal conditions, and the structure was determined by single-crystal X-ray diffraction. 1 crystallizes in the orthorhombic system, space group Pbca with a = 15.5092（12）, b = 11.5756（9）, c = 17.8138（14） A, V = 3198.1（4） A^3, Mr= 1023.12, Z = 4, D, = 2.125 g/cm^3,μ = 8.807 mm^-1, F（000） = 1976, S = 1.171, the final R = 0.0591 and wR = 0.1067 for 3170 observed reflections with 1 〉 2σ（I）. 1 consists of isolated dimeric [As2Se5]^4- anion constructed by two corner-sharing AsSe3 trigonal pyramids and transition metal [Co（en）3]^2＋ cations. The optical absorption property and thermal stability of 1 are reported.