Acta Cryst. (2006). E62, m2310-m2312 [ doi:10.1107/S1600536806033186 ]
Abstract: In the crystal structure of the title compound, poly[ammonium di-2-oxalato-bismuthate(III) 3.72-hydrate], NH4[Bi(C2O4)2]·3.72H2O, the Bi3+ ion and the centre of the [NH4]+ ion lie on different special positions of m2 site symmetry, and the oxalate group and one water molecule on different special positions of m site symmetry; the second water molecule lies on a special position of 2/m site symmetry. The Bi atom is eight-coordinate in a slightly distorted dodecahedral environment. This single-crystal redetermination improves the precision of the previous powder diffraction study [Vanhoyland et al. (2004). Inorg. Chem. 43, 785-789], as all non-H atoms have been refined anisotropically.
Online 25 August 2006
Copyright © International Union of Crystallography