Transition of Classic Decatungstate to Paratungstate: Synthesis, Structure and Luminescence Properties of Two Paratungstate-based 3-D Compounds

Ling Yuan, Chao Qin, Xinlong Wang, Yangguang Li, Enbo Wang
2008 Zeitschrift für Naturforschung. B, A journal of chemical sciences  
Two new paratungstate-based compounds were isolated from the acetate buffer solution containing decatungstate [W10O32]4− at different reaction temperatures. The two compounds have been characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA), and single crystal X-ray diffraction, and formulated as (H3O)3[{K(H2O)}2{Na2(H2O)8}2(Na0.5H2O)2(H2W12O2)] ・ 6H2O (1) and (H3O)2[{K(H2O)4}2{Na3(H2O)9}2(H2W12O42)]·2H2O (2). Compounds 1 and 2 exhibit different three-dimensional
more » ... three-dimensional architectures with bridging sodium and potassium as countercations for the paratungstate anion. Compound 1 displays an intense blue luminescence in the solid state. The structural transformation from [W10O32]4− to [H2W12O42]10− in an acetate buffer provides a route for the synthesis of new paratungstate-based compounds.
doi:10.1515/znb-2008-1006 fatcat:xy6mqlbb3nfnribuooud53qkua