Hydrothermal synthesis and characterization of (N(C2H5)4)4[VMo12V2O44] by S. Cevik, Z. Alkan, M. Poyraz, M. Sari, and O. Büyükgüngör

Crystal Research and Technology

Cryst. Res. Technol. 42, 955 (2007) - Abstract -

Hydrothermal synthesis and characterization of (N(C₂H₅)₄)₄[VMo₁₂V₂O₄₄]

S. Cevik, Z. Alkan, M. Poyraz, M. Sari*, and O. Büyükgüngör**

Department of Chemistry, Science and Literature Faculty, Afyon Kocatepe University, Afyonkarahisar TR-03200, Turkey
*Department of Physics Education, Education Faculty, Gazi University, Beţevler-Ankara TR-06500, Turkey
**Department of Physics, Science and Literature Faculty, Ondokuz Mayýs University, Kurupelit-Samsun TR-55139, Turkey

Keywords	polyoxometalate, heteropolyoxometalate, polyoxomolybdate, heteropolyoxomolybdate, heteropolymolybdovanadate
PACS	61.66.Fn
DOI	10.1002/crat.200710924

The hydrothermal reaction of a mixture of Na₂MoO₄.2H₂O, V₂O₅, pyromellitic acid (1,2,4,5-C₆H₂(COOH)₄), (C₂H₅)₄NCl and 0,1 M H₂SO₄ for 88 h at 180°C gives blue needle-like crystals of [V^IV₂O₂(H₂O)₂ (C₆H₂(COO)₄)] in 20% yield (based on V) and dark blue prismatic crystals of the title compound, mixed-valance (N(C₂H₅)₄)₄[VMo₁₂V₂O₄₄], 1, in 12% yield (based on Mo). 1 was investigated by means of elemental analysis, thermogravimetry, Fourier Transform Infrared Spectroscopy and Single Crystal X-ray Diffraction Methods.

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