氰根桥联配合物[{Cu(tmen)_2}_2W(CN)_8]_2[Cu(tmen)(H_2O)W(CN)_8]_2·16H_2O的晶体结构和磁性研究  

Crystal Structure and Magnetic Properties of Cyanide-bridged Complex [{Cu(tmen)_2}_2W(CN)_8]_2[Cu(tmen)(H_2O)W(CN)_8]_2·16H_2O

作　　者：刘倩影 杨春[1] 王庆伦[2] 仝玉章 王振平[1] Liu Qianying;Yang Chun;Wang Qinglun;Tong Yuzhang;Wang Zhenping(School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China;College of Chemistry, Nankai University, Tianjin 300071, China)

机构地区：[1]河北工业大学化工学院,天津300130 [2]南开大学化学学院,天津300071

出　　处：《南开大学学报（自然科学版）》2018年第6期72-78,共7页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金(21771111;21601092;21371104);河北省自然科学基金(B2016202280)

摘　　要：在水溶液中使用[W(CN)8]3-、1,1,2,2-四甲基乙二胺(tmen)与Cu2+离子自组装合成了一个氰根桥联多核配合物[{Cu(tmen)2}2W(CN)8]2[Cu(tmen)(H2O)W(CN)8]2·16H2O(1).X-射线单晶衍射分析表明,配合物1包括氰根桥联的1个中心对称的正方形配位阴离子Cu2W22-和2个V字形配位阳离子Cu2W+,在阴、阳离子中氰根与Cu(Ⅱ)配位的位置分别为赤道平面和姜-泰勒轴方向.磁性研究表明配合物1内通过氰根传递的铁磁相互作用占主导地位,磁耦合常数为J=14.0 cm-1.By reacting octacyanotungstate(Ⅴ) with Cu(NO3)2·3H2O and 1,1,2,2-tetramethyl-1, 2-ethylenediamine in water, an ionic pair complex [{Cu(tmen)2}2W(CN)8]2[Cu(tmen)(H2O)W(CN)8]2 ·16H2O(1) was obtained. Complex 1 is composed of one cyano-bridged square shaped Cu2W2^ 2- anion and two V shaped Cu2W^+ cations. In the anion and cations, Cu(Ⅱ) ions connect with W(V) ions by equatorial and axial cyano- bridged linkage, respectively. In the temperature range of 2-300 K, the direct current magnetic susceptibilities of complex 1 indicate the presence of predominant ferromagnetic interactions in the W(V)-C≡N-Cu (Ⅱ) linkage, with the coupling constants J=14.0 cm^-1.

关 键 词：八氰合钨(Ⅴ)配合物 1 1 2 2-四甲基乙二胺 异双金属配合物 晶体结构 磁性 

分 类 号：O614[理学—无机化学]