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Mn_2[V_(12)B_(16)O_(52)(OH)_6](en)_2(H_3O)_6(H_2O)_5(en=ethylenediamine)的结构及谱学研究

The Structure and Spectral Research on Mn_2[V_(12)B_(16)O_(52)(OH)_6](en)_2(H_3O)_6(H_2O)_5(en=ethylenediamine)
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摘要 采用水热合成法合成了一种结构新颖的多硼钒氧簇化合物Mn2[V12B16O52(OH)6](en)2(H3O)6(H2O)5(en=ethylenediamine)1,通过单晶X射线衍射确定该化合物的结构。化合物1中,在ab平面上,簇单元之间通过[Mn(H2O)2]2+连接成二维层状结构,另外,层与层之间在c方向上通过氢键连接成三维空间结构。此外,对化合物1的谱学性质进行了红外光谱、磁和热微扰下的二维红外相关光谱、紫外-可见固体漫反射光谱分析,探讨了其结构与谱学性质的关系。磁微扰的二维红外相关光谱表明B—O,V—O—V和Mn—O—B的伸缩振动对于磁场的变化比较敏感,热微扰的二维红外相关光谱表明B—OH,B—O,V—O—V和Mn—O—B的伸缩振动对热微扰比较敏感。 A novel polyoxovanadium borate Mn2[V12B16O52(OH)6](en)2(H3O)6(H2O)5 1(en=ethylenediamine) was hydrothermally synthesized and characterized by IR,two-dimensional infrared(2D IR) correlation spectroscopy with magnetic and thermal perturbation,and single crystal X-ray diffraction.In 1,it is interesting that each [V12B16O52(OH)6]14-units is connected by four [Mn(H2O)2]2+ to generate a 2D layer on the ab plane.Along c axis,these layers are further linked by H-bond to form a 3D framework.The response of the stretching vibrations of B—O,V—O—V and Mn—O—B was detected in the 2D IR correlation spectra with magnetic perturbation.In addition,the response of the stretching vibrations of B—OH,B—O,V—O—V and Mn—O—B was detected in the 2D IR correlation spectra with thermal perturbation.
出处 《光谱学与光谱分析》 SCIE EI CAS CSCD 北大核心 2011年第11期3026-3030,共5页 Spectroscopy and Spectral Analysis
基金 国家自然科学基金项目(20873021 21003020) 福建省高等学校新世纪优秀人才支持计划项目(SXSJRC2007-21)资助
关键词 金属氧簇 多钒硼氧簇 晶体结构 光谱分析 二维相关光谱 Polyoxometalate Polyoxovanadiumborate Crystal structure Spectra analysis 2D correlation spectroscopy
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