Materials Data on Ta2Sn2O7 by Materials Project

Abstract

Sn2Ta2O7 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional and consists of one Sn2O framework and one TaO3 framework. In the Sn2O framework, Sn2+ is bonded in a distorted linear geometry to two equivalent O2- atoms. Both Sn–O bond lengths are 2.32 Å. O2- is bonded to four equivalent Sn2+ atoms to form corner-sharing OSn4 tetrahedra. In the TaO3 framework, Ta5+ is bonded to six equivalent O2- atoms to form corner-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles are 39°. All Ta–O bond lengths are 2.01 Å. O2- is bonded in a distorted bent 150 degrees geometry to two equivalent Ta5+ atoms.