基于不同夹心型多酸的两个超分子化合物的合成、结构及性能研究  

Syntheses,structures and properties of two supramolecular structures based on different sandwich-type polyoxometalates

作　　者：李婷婷[1] 刘玉静[1] 赵莹莹[1] 田爱香[1] LI Ting-Ting LIU Yu-Jing ZHAO Ying-Ying TIAN Ai-Xiang(College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, China)

机构地区：[1]渤海大学化学化工学院,辽宁锦州121013

出　　处：《渤海大学学报（自然科学版）》2016年第3期237-243,共7页Journal of Bohai University:Natural Science Edition

基　　金：国家自然科学基金资助项目(No:21571023);辽宁省高等学校青年学者成长计划(No:LJQ2012097)

摘　　要：利用两种柔性配体1,1'-(1,4-丁烷)双(咪唑)(bbi)和1,4-双(咪唑-1-亚甲基)苯(bix),我们在水热条件下获得了两个基于不同夹心型多金属氧酸盐的超分子化合物:(bix)5[H5As W9Co2(H_2O)O34]2·2H_2O(1)和(bbi)4[H5As W9Ni2(H_2O)O34]2·4H_2O(2),并对两个化合物进行了单晶X-射线衍射、元素分析和红外光谱表征.结构分析表明,化合物1属于单斜晶系,P21/n空间群,晶胞参数a=13.5665(9)A,b=17.6394(13)A,c=23.8019(17)A,β=102.326(7)°,V=5564.6(7)A3,Z=2,R1=0.0352,ωR2=0.0514.化合物2属于三斜晶系,P 1空间群,晶胞参数a=12.311(5)A,b=13.661(5)A,c=16.971(5)A,α=103.608(5)°,β=104.189(5)°,γ=111.906(5)°,V=2392.0(15)A3,Z=1,R1=0.0601,R2=0.1734.目标化合物中两种不同的夹心型多酸阴离子和配体bbi、bix通过丰富的氢键作用形成超分子框架结构.By using two flexible ligands 1,1′-（1,4-butanediyl）bis（imidazole） （bbi） and 1,4-bis（imi-dazol-1-ylmethyl）benzene （bix）, we obtained two supramolecular compounds based on different Sandwich -type polyoxometalates, （bix）5[H5AsW9Co2（H2O）O34]2？ 2H2O （1）and （bbi）4[H5AsW9Ni2（H2O）O34]2？4H2O（2）, and characterized them by single -crystal X -ray diffraction, elemental analysed and IR spectra. Structural analyses show that compound 1 crystallizes in space group P21/n, a=13.5665（9）A,b=17.6394（13）A, c=23.8019（17）A,β=102.326（7）°,V=5564.6（7）A3,Z=2,R1 =0.0352, ωR2 =0.0514.Compound 2 crystallizes in space group P 1, a=12.311（5）A, b=13.661（5）A, c=16.971（5）A,α=103.608（5）°,β=104.189（5）°,γ=111.906（5）°,V=2392.0（15）A3,Z=1,R1 =0.0601, R2 =0.1734.In these two title compounds , there exist abundant hydrogen bonding interactions between two different sandwich anions and lig -ands bbi and bix to construct supramolecular structures .

关 键 词：夹心型多酸 水热合成 双咪唑柔性配体 电化学 光催化 

分 类 号：O614.711[理学—无机化学]