Barium manganese(II) selenostannate(IV), BaMnSnSe4

Abstract

The title compound, BaMnSnSe4, was obtained by reaction of the elements at 1123 K in an evacuated silica tube. It adopts the BaCdSnS4 structure type, which is a variant of the SrIn2Se4 structure type. Its structure consists of distorted edge-sharing tetrahedra, alternating with Mn and Sn atoms as central atom. These [MnSnSe6] units display corner sharing, forming stacked infinite layers in the ac plane. The three different Ba2+ atoms are located between the [MnSnSe6] layers, two on twofold rotation axes, and exhibit distorted square-antiprismatic coordinations.