Hou Wentao, Guo Jiuyu, Xu Xiao, Wang Zuoxiang, Zhang Deng, Wan Hongxiang, Song You, Zhu Dunru, Xu Yan
College of Chemistry and Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, P. R. China.
Dalton Trans. 2014 Jan 14;43(2):865-71. doi: 10.1039/c3dt52195h.
Two new layered hybrid organic-inorganic compounds [Zn(pyim)]2V4O12 () (pyim = 2-(2-pyridyl)imidazole) and [Cu(bim)2]2V4O12(H2O)·CH3CH2OH () (bim = bis(1-imidazolyl)methane) based on polyoxovanadates (POVs) and organic ligands decorated transition metal units have been synthesized by hydrothermal and solvothermal methods respectively. Single crystal XRD, fluorescence spectrum, magnetic measurement, IR spectra, powder XRD and thermogravimetric (TG) measurements were performed to analyze the structures and properties of and . The structural analysis reveals that compound features a two-dimensional {[Zn(pyim)]2V4O12}n layered structure, constructed by sine wave-like {V4O12}n(4n-) chains, Zn(2+) ions and pyim ligands. In the layered structure of , {V4O12}(4-) circles are connected by Cu(2+) ions to form {Cu(V4O12)}n(2n-) chains, which are further linked by {Cu(bim)4}(2+) subunits to generate a hybrid layer of . The magnetic susceptibility measurement indicates strong antiferromagnetic interactions between Cu(2+) ions in .
基于多钒酸盐（POV）和有机配体修饰的过渡金属单元，分别通过水热法和溶剂热法合成了两种新型层状有机 - 无机杂化化合物[Zn(pyim)]2V4O12 （）（pyim = 2-(2 - 吡啶基)咪唑）和[Cu(bim)2]2V4O12(H2O)·CH3CH2OH （）（bim = 双(1 - 咪唑基)甲烷）。通过单晶XRD、荧光光谱、磁性测量、红外光谱、粉末XRD和热重（TG）测量对和的结构与性质进行了分析。结构分析表明，化合物具有二维{[Zn(pyim)]2V4O12}n层状结构，由正弦波状的{V4O12}n(4n-)链、Zn(2+)离子和pyim配体构成。在的层状结构中，{V4O12}(4-)环通过Cu(2+)离子连接形成{Cu(V4O12)}n(2n-)链，这些链进一步通过{Cu(bim)4}(2+)亚单元相连，生成的杂化层。磁化率测量表明中Cu(2+)离子之间存在强反铁磁相互作用。
