An Acetate-Functionalized Tetranuclear Zirconium Sandwiching Polyoxometalate Complex

• Published in: European Journal of Inorganic Chemistry Vol. 2010; no. 22; pp. 3473 - 3477
• Main Authors: Zhang, Wei, Liu, Shu-Xia, Zhang, Chun-Dan, Tan, Rui-Kang, Ma, Feng-Ji, Li, Shu-Jun, Zhang, Yuan-Yuan
• Format: Book Review Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01-08-2010; WILEY‐VCH Verlag
• Subjects: Clusters; Polyoxometalates; Sandwich complexes; Stabili­zation; Zirconium
• ISSN: 1434-1948; 1099-0682
• DOI: 10.1002/ejic.201000043

The dimeric, zirconium‐sandwiching compound K4H6[Zr4(OH)6(CH3COO)2(α‐PW10O37)2]·23H2O (1) was obtained by the reaction of lacunary [PW11O39]7– and ZrCl4 in a 1 M potassium acetate buffer. It was characterized by elemental and thermogravimetric analysis, X‐ray crystallography, solution 183W NMR, FTIR, and UV spectroscopy, and cyclic voltammetry (CV). All the studies indicate that compound 1 is stable both in the solid state and in solution. The cyclic voltammograms indicate good electrocatalytic activity in the reduction of nitrite.
Dimeric zirconium‐sandwiching polyoxometalate complex K4H6[Zr4(OH)6(CH3COO)2(α‐PW10O37)2]·23H2O (1) was prepared from ZrCl4 and K7[PW11O39] and characterized by single‐crystal X‐ray, thermogravimetric, and elemental analysis, IR, UV, and NMR spectroscopy, and cyclic voltammetry. It is stable in a wide pH range for a long time and has good electrocatalytic activity in the reduction of nitrite.