Keggin-type polyoxometalate [SiW12O40]4-, and Cr(III) trinuclear cation [Cr3O (OOCH)6(H2O)3]+, assembled in the presence of K+ to form a novel complex, K3[Cr3O(OOCH)6 (H2O)3]SiW12O40•2H2O (1). The structure was confirmed by single crystal X-ray analysis, FT-IR and diffuse reflectance UV-vis spectroscopy. The investigation with FT-IR, and diffuse reflectance UV-vis measurements revealed that 1 was stable up to 200°C. It was revealed by single crystal X-ray analysis that 1 possesses a straight channel filled with water molecules, which can be removed upon heat treatment without degradation in the structure of the constituent ions.
Research on Chemical Intermediates – Springer Journals
Published: Oct 13, 2004
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