一例基于Keggin型多氧钨酸盐的Cu(Ⅱ)-dien配合物的合成、晶体结构和表征  

Synthesis,crystal structure and characterization of a Cu(Ⅱ)-dien complex based on Keggin polyoxotungstates

作　　者：宫德龙 刘云[2] 李杰[2] GONG Delong;LIU Yun;LI Jie(Laboratory and Equipment Management Service,Henan University,Kaifeng 475004,Henan,China;College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,Henan,China)

机构地区：[1]河南大学实验室与设备管理处,河南开封475004 [2]河南大学化学化工学院,河南开封475004

出　　处：《化学研究》2021年第6期488-493,共6页Chemical Research

摘　　要：通过把多氧钨酸盐引入Cu⁃dien体系,利用水热法合成了一维锯齿链状的有机⁃无机的杂化物[Cu(dien)(H_(2)O)]_(2)[Cu(dien)(H_(2)O)2]2{[Cu(dien)][α⁃GeW11.5Cu0.5O40]}2]·3H_(2)O(1)(dien=diethylenetriamine)。利用元素分析、红外光谱和X射线单晶衍射对其结构进行了表征。结果表明1属于三斜P⁃1空间群。1的基本分子单元由两个已知的具有Keggin结构的多阴离子{[Cu(dien)][α⁃GeW_(11.5) Cu_(0.5) O40]}^(4-)、两个游离的铜配位阳离子([Cu(dien)(H_(2)O)]_(2)+、[Cu(dien)(H_(2)O)2]2+)和三个结晶水组成;相邻的{[Cu(dien)][α⁃GeW_(11.5) Cu_(0.5) O40]}^(4-)多阴离子通过端基氧原子(Od)相连形成了一维锯齿链状结构。A new organic⁃inorganic hybrid with a one⁃dimensional zigzag chain,[Cu(dien)(H_(2)O)]_(2)[Cu(dien)(H_(2)O)2]2{[Cu(dien)][α⁃GeW_(11.5) Cu_(0.5) O40]}2]·3H_(2)O(dien=diethylenetriamine)(1),has been obtained under mild hydrothermal conditions by introducing polyoxotungstate into the Cu⁃dien system.Its structures have been determined by elemental analysis,infrared spectrometry and single⁃crystal X⁃ray diffraction.Results indicate that as⁃synthesized 1 is crystallized in the triclinic space group P⁃1.The basic molecular unit of 1 is composed of two Keggin⁃type anions{[Cu(dien)][α⁃GeW11.5Cu0.5O40]}4-,two discrete copper coordination cations[Cu(dien)(H_(2)O)]_(2)+and[Cu(dien)(H_(2)O)2]2+,and three crystal water molecules.The adjacent{[Cu(dien)][α⁃GeW_(11.5) Cu_(0.5) O40]}^(4-)polyoxoanions are interconnected together through terminal oxygens(Od)into 1D zigzag chains.

关 键 词：Keggin簇 过渡金属配合物 杂多钨酸盐 合成 晶体结构 

分 类 号：O614[理学—无机化学]