有机-无机复合物[DMAH]_3PMo_(12)O_(40)·3C_2H_5OH的合成、结构及表征(英文)  

Synthesis,crystal structure and characterization of an organic-inorganic complex(DMAH)_3PMo_(12)O_(40)·3C_2H_5OH

作　　者：陈泽冠[1] 徐玲[1] 吴莹[1] 张勇[1] 闻荻江[1] 

机构地区：[1]苏州大学材料与化学化工学部,江苏苏州215123

出　　处：《苏州大学学报（自然科学版）》2010年第1期77-82,共6页Journal of Soochow University(Natural Science Edition)

基　　金：the Natural Science Foundation of Jiangsu Committee of Education(07KJB150100)

摘　　要：在乙醇溶剂中合成得到了有机多金属氧酸盐复合物(DMAH)3PMo12O40.3C2H5OH,该复合物属于三斜晶系,P1^空间群,a=1.224 54(4),b=1.474 97(5),c=1.876 53(8)nm,α=79.918(4)°,β=79.371(4)°,γ=67.513(3)°,V=3.057 43(19)nm3,Dc=2.528g/cm3,Z=2,μ=2.502mm-1,Mr=2 327.01,F(000)=2 236,R=0.045 3,wR=0.106 7以及GOF=1.040.结构解析表明,每个[PMo12O40]3-杂多阴离子与3个质子化的DMA分子以及3个溶剂分子C2H5OH发生配位,且在较强的氢键力作用下,形成稳定的超分子体系.IR以及ESR图谱表明杂多阴离子[PMo12O40]3-和质子化的DMAH+之间发生了明显的电荷转移作用.A polyoxometalate-based complex （DMAH）3PMo12O40-3C2H5 OH has been synthesized in ethanol solution. X-ray single crystal diffraction analysis reveals that it crystallizes in triclinic, space group Pi with a = 1. 224 54 （4） nm, b=1.47497（5）nm, c=1.87653（8）nm, α=79.918（4）°, β=79.371（4）°,γ=67.513（3）°,V=3.05743 （19） nm^3, Dc=2.528g/cm^3, Z=2, μ=2.502mm^-1, Mr =2327.01, F（000） =2236, R=0.0453, wR= 0. 106 7 and GOF= 1. 040. Structural analysis indicates that every [ PMo12O40 ]^3- heteropolyanion is associated with three of protonated DMA and C2H5OH solvate molecules with strong hydrogen bend in solid state. The results of IR and ESR spectra indicate that there exist charge transfer interaction between the heteropolyanions [ PMo12O40 ] ^3- and coordination cations DMAH^＋ .

关 键 词：Keggin结构磷钼酸 有机-无机复合物 晶体结构 

分 类 号：O641.4[理学—物理化学]