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配合物H2[Hbim]2[(bim)2Mo8O26]·H2O的合成新途径 被引量:1

A New Method of Synthesis for the Compound H_2[Hbim]_2[(bim)_2Mo_8O_(26)]·H_2O
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摘要 以苯并咪唑和MoO3等为原料合成得到一个含有Mo—N键的新型配合物H2[Hbim]2[(bim)2Mo8O26].H2O(bim代表苯并咪唑),并通过红外光谱和单晶X-射线衍射等方法确定了其晶体结构.结构分析表明:该晶体属于单斜晶系,P2(1)/n空间群.晶胞参数:a=1.388 2(14)nm,b=1.392 7(14)nm,c=1.594 0(16)nm,α=90°,β=107.334(12)°,γ=90°,V=2.942(5)nm3,Z=2,R1=0.052 5.该配合物由苯并咪唑和[Mo8O26]4-配位形成主体结构,苯并咪唑通过Mo—N键直接与[Mo8O26]4-相连,周围质子化的苯并咪唑阳离子和游离的H+作为反荷离子平衡电荷. A new compound, H2[Hbim]2[(bim)2Mo8O26]·H2O (bim= benzimidazole), was synthesized by benzimidazole, MoO3, et al. and characterized by IR spectrum and single-crystal X-ray diffraction. The compound crystallizes as a monoclinic system, having space group: P2(1)/n, unit cell with a=1. 388 2(14)nm, b=1. 392 7(14) nm, c =1. 594 0(16) nm,α= 90°, β=107.334(12)°, γ=90°, V=2.942(5) nm^3, Z=2, R1=0.052 5. The compound has the [Mo8O26]^4- cluster as the structural motif and covalently linked with benzimidazole molecules by Mo--N bond. The protonated benzimidazole cations and H^+ cations play a role of charge-balance.
出处 《北京理工大学学报》 EI CAS CSCD 北大核心 2008年第12期1109-1112,共4页 Transactions of Beijing Institute of Technology
基金 国家自然科学基金资助项目(20371007,20476001) 北京理工大学优秀青年教师资助计划(“九八五”1070012047109)
关键词 多金属氧簇 苯并咪唑 配合物 polyoxometalate benzimidazole compound
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