氮杂环卡宾银碘化物[Ag(MEIm)_2]^+[AgI_2]^-的合成、结构与催化性能(MEIm=1-methyl-3-ethyl-imidazolyl)(英文)  

Synthesis,Crystal Structure and Catalytic Behavior of Linear N-heterocyclic Carbene Silver [Ag(MEIm)_2]^+[AgI_2]^-(MEIm=1-methyl-3-ethyl-imidazolyl)

作　　者：王志国[1] 边清泉[1] 黄宝美[1] 邓毅[1] 刘思曼[1] WANG Zhi-Guo;BIAN Qin-Quan;HUANG Bao-Mei;DENG Yi;LIU Si-Man(Department of Chemistry and Chemical Engineering,Mianyang Normal University,Mianyang,Sichuan 621000,China)

机构地区：[1]绵阳师范学院化学与化学工程学院,绵阳621000

出　　处：《无机化学学报》2012年第1期191-194,共4页Chinese Journal of Inorganic Chemistry

基　　金：四川省科技厅应用基础基金(2009JY0075)资助项目

摘　　要：常温下(MEIm)+I-(MEIm=1-methyl-3-ethyl-imidazolyl)与Ag2O按照物质的量比为1∶2在DMSO中反应成功的合成了线型氮杂环卡宾银碘化物[Ag(MEIm)2]+[AgI2]-,化合物通过了元素分析,1H NMR,X-ray衍射表征。配合物属于单斜晶系,空间群为C2/m,a=1.592 5(4)nm,b=0.679 07(14)nm,c=0.927 1(2)nm,β=110.247(5)°,V=0.940 7(4)nm3,Mr=689.86,Z=8,Dc=2.436 g.cm-3,μ(Mo Kα)=5.36 mm-1,F(000)=640,R=0.036,wR=0.105。配合物由阴阳离子对构成,配阳离子中2个卡宾碳原子与银原子呈线型结构。目标化合物对L-lactide的聚合具有高的催化活性。The title complex [Ag（MEIm）2]＋[AgI2]- （MEIm=l-methyl-3-ethyl-imidazolyl） has been synthesized by thereaction of Ag20 with （MEIm） ＋I- in a 1：2 molar ratio at room temperature in DMSO, and characterized byelemental analysis, ^1H NMR and single-crystal X-ray diffraction analysis. It crystallizes in monoclinic system,space group C2/m with a=1.592 5（4） nm, b=0.679 07（14） nm, c=0.9271（2）nm,β=110.247（5）°,V=O.9407（4）nm^3,M4=689.86,Z=8,DF2.436g·cm^-3,μ（M0K Ka）=5.36mm^-1,F（000）=640 The structure was refined to R=0.036 6and wR=0.1426 for 728 observed reflections with Ⅰ〉20（Ⅰ）. The cation has a typical linear conformation of[Ag（carbine）2]＋ with a C-Ag-C angle of 180°. The catalytic behavior of the title complex has been investigated, theresults indicate the title complex has a highly catalytic activation for L-lactide polymerization. CCDC： 843657.

关 键 词：氮杂环 卡宾 银 晶体结构 催化性能 

分 类 号：O614.122[理学—无机化学]