TIN(II) OXYHYDROXIDE BY X-RAY-POWDER DIFFRACTION

The structure of tin(II) oxide hydroxide, Sn6O4(OH)(4), has been refin ed by Rietveld analysis of X-ray powder diffraction data. Atomic param eters based on the isostructural lead analogue were used in the starti ng model. The structure was refined in the tetragonal space group <P(4 )over bar 2(1)c> with a = 7.9268 (4) and c = 9.1025 (5) Angstrom. The title compound forms clusters of Sn6O4(OH)(4) with the Sn atoms in dis torted tetragonal pyramidal coordination geometries. Each Sn atom is c oordinated to two bridging oxide O and two bridging hydroxy O atoms. T he JCPDS file number for Sn6O4(OH)(4) is 46-1486.