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Z. Naturforsch. 2014,
69b, 871 – 877
doi:10.5560/ZNB.2014-4117
A New Wells-Dawson-based Organic-Inorganic Honeycomb Hybrid Compound with Cadmium Bis(2,2′-biimidazole) Spacers
Department of Chemistry, Bohai University, Jinzhou, 121000, P. R. China
Reprint requests to Ai-xiang Tian. E-mail:
tian@bhu.edu.cn
Received June 4, 2014 / published online August 12, 2014
A new Wells-Dawson-based organic-inorganic honeycomb hybrid compound, namely [Cd3(H2biim)6P2W18O62]·2H2O (1) (H2biim = 2,2′-biimidazole), was hydrothermally synthesized by using a cadmium salt, the biimidazole ligand and the Wells-Dawson-type POM, and characterized by single-crystal X-ray diffraction, elemental analyses and IR spectroscopy. In compound 1, each polyoxoanion cluster [P2W18O62]6− is coordinated by six [Cd(H2biim)2]2+ subunits via six of its terminal oxygen atoms on two equatorial sites. Each [Cd(H2biim)2]2+ subunit links two adjacent polyoxoanions. Thus, the linking styles of the [P2W18O62]6− and [Cd(H2biim)2]2+ subunits induce a honeycomb-like layer. The electrochemical and photocatalytic properties of the title compound have been studied.
Key words: Wells-Dawson Polyoxometalate, Biimidazole Ligand, Electrochemistry, Photocatalytic Property