Hydrothermal synthesis and structural characterization of a new vanadyl(IV) arsenate: BaVO(AsO4)(H2AsO4)·H2O
- 1 January 1992
- journal article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 15,p. 2395-2397
- https://doi.org/10.1039/dt9920002395
Abstract
A new vanadyl(IV) arsenate, BaVO(AsO4)(H2AsO4)·H2O, has been synthesised hydrothermally at 230 °C and characterized by single-crystal X-ray diffraction, thermogravimetric analysis, and magnetic susceptibility. The compound crystallizes in the monoclinic space group P21/n with a= 11.222(2), b= 6.570(2), c= 11.540(3)Å, β= 102.87(2)°, Z= 4 and R= 0.0297. The structure consists of layers of corner-sharing VO6, AsO4 and H2AsO4 polyhedra, extending parallel to the (101) crystallographic plane with the Ba atoms and H2O molecules between the layers. The connectivity formula for a layer is ∞ 2[(VOO2/2O3/2)(AsOO3/2){As(OH)2O2/2}]2–. The adjacent layers are linked by O–Ba–O bonds and hydrogen bonding.Keywords
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