Two dumbbell-like polyoxometalates constructed from capped molybdovanadate and transition metal complexes |
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| Authors: | Shuang Yao Enbo Wang |
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| Institution: | Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Ren Min Street No. 5268, Changchun, Jilin 130024, PR China |
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| Abstract: | Self assembly of NaVO3, Na2MoO4·2H2O and NiCl2·6H2O with the assistance of organic liginds under hydrothermal conditions results in two molybdovanadates Ni(enMe)2]4{Ni(enMe)2(H2O)]2Ni(enMe)2](VVMoVI8V4IVO40)(VIVO)2]2}·10H2O (1) and Ni(enMe)2]5{Ni(enMe)2]2(VVMoVI4MoV4V4IVO40)(VIVO)4]2}·2H2O (2), (enMe = 1,2-diaminopropane), which have been characterized by single crystal X-ray diffraction analysis, IR spectroscopy, and elemental analysis. Both of the two compounds exhibit dumbbell-like structures constructed from capped polyoxomolybdovanadates and Ni(enMe)2]2+ complexes. Polyoxoxanion 1 is composed of two bicapped Keggin-type anions (VVMo8V4IVO40)(VIVO)2]7−, one Ni(enMe)2]2+ bridging fragment and two decorated nickel(II) complexes. Polyxoxanion 2 consists of two tetracapped molybdenum-vanadium polyoxoanions (VVMoVI4MoV4V4IVO40)(VIVO)4]7−, one Ni(enMe)2]2+ bridging fragment and a nickel(II) decorated fragment. Polyxoxanions 1 and 2 are further linked to form three-dimensional supramolecular networks through extensive hydrogen bonding interactions. In addition, photocatalysis properties of these two compounds have been investigated. |
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| Keywords: | Molybdovanadate Dumbbell-like Capped Photocatalysis |
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