银配合物[[CH3CH2{(CHNCHCHN)}]2CH2]n^2+[(Ag2Br4)2]n^2-的合成与结构  

The synthesis and structure of silver complex of [[CH3CH2{(CHNCHCHN)}]2CH2]n^2+[(Ag2Br4)2]n^2-

作　　者：王志国[1] 宋艳平 郭莉萍 王庆宇 赵文彬 WANG Zhi-guo;SONG Yan-ping;GUO Li-ping;WANG Qing-yu;ZHAO Wen-bin(Department of Chemistry and Chemical Engineering,Mianyang Normal University,Mianyang,Sichuan,621000)

机构地区：[1]绵阳师范学院化学与化学工程学院,四川绵阳621000

出　　处：《贵州师范学院学报》2019年第9期16-20,共5页Journal of Guizhou Education University

基　　金：四川省教育厅自然科学基金“氮杂环卡宾喹啉金属配合物的合成,药性及其应用研究”(No:13cz0016)。

摘　　要：亚甲基桥联咪唑盐[[CH3CH2{(CHNCHCHN)}]2CH2]n^2+2[Br]^-与Ag2O按照1∶1摩尔比在乙腈溶液中高温回流反应成功合成咪唑阳离子溴化银配合物[[CH3CH2{(CHNCHCHN)}] 2CH2]n^2+[(Ag2Br4)2]n^2-。配合物通过了元素分析、1HNMR和X-ray衍射表征。晶体的结构表明,该晶体属于正交晶系,空间群为Pna21,化合物晶胞参数为a=8.6694 (5)A,b=13.2996 (8)A,c=16.3045 (9)A,V=1879.90(19)A^3,Z=4,F(000)=1384,D=2.621 g/cm^3,μ=10.58 mm^-1,R1=0.024,wR2=0.059。化合物由阴阳离子构成,阳离子是乙基取代亚甲基桥联咪唑离子,阴离子是由{[AgBr 2]-}n构成的聚合层状结构,层状扩展到100个单元。阴离子的基础构建单元为扭曲的AgBr4四面体结构,四元和十二元环通过共用AgBr4四面体结构形成,阳离子位于银离子的层状之间,部分的凸进十二元环之中。The title complex [[CH3CH2{(CHNCHCHN)}]2CH2]n^2+[(Ag2Br4)2]n^2-has been synthesized by the reaction of the bridged imidazolium [[CH3CH2{(CHNCHCHN)}]2CH2]n^2+2[Br]^- with Ag2O in a 1∶1 molar ratio at high temperature in CH3CN. The compound has been characterized by elemental analysis,1HNMR and single-crystal X-ray diffraction. The crystal belongs to Orthorhombic system with space group Pna21, with a=8.6694(5) A,b=13.2996(8)A, c=16.3045(9)A, V = 1879.90(19) A^3, Z=4, F(000)=1384, D=2.621 g/cm^3, μ=10.58 mm^-1, R1= 0.024,and wR2= 0.059. The compound is composed of cations and anions. Cations are ethyl substituted methylene bridged imidazole ions, while anions are the polymer layered structure composed of {[AgBr2]^-}n, spreading to 100 units. The basic building unit of the anion is a slightly distorted AgBr4 tetrahedron. A four-and 12-membered ring system is formed by corner sharing of the AgBr4 tetrahedra. The imidazolium cations are located between the anionicsheets and partly protrude into the voids defined by the 12-membered rings.

关 键 词：银配合物 乙基甲基咪唑 合成 结构 

分 类 号：O614.122[理学—无机化学]