Polyoxometalates functioned as ligands: Synthesis and crystal structure of a new hybrid compound constructed from metatungstate and metal complex units

摘要

A new organic-inorganic hybrid compound, [Zn(bpy)3]_(1.5)[H3W_(12)O_(40)Zn(bpy)2(H2O)]·0.5H2O (bpy = 2,2'-bipyridine) has been synthesized hydrothermally from ZnCl2, Na6[H2W_(2)O_(40)], and 2,2'-bipyridine, and has been analyzed using X-ray crystallography, thermogravimetric analysis and UV-Vis spectroscopy. The compound contains an anionic complex [H3W_(2)O_(40)Zn(bpy)2(H2O)]~(3-) in which α-metatungstate ion [H3W_(12)O_(40)]~(5-) coordinated to a [Zn(bpy)2(H2O)]~(2+) unit through a bridging oxo group.