Materials Data on Nd2Sn2O7 by Materials Project

Abstract

Nd2Sn2O7 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Nd3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are two shorter (2.32 Å) and six longer (2.60 Å) Nd–O bond lengths. Sn4+ is bonded to six equivalent O2- atoms to form corner-sharing SnO6 octahedra. The corner-sharing octahedral tilt angles are 51°. All Sn–O bond lengths are 2.10 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Nd3+ atoms to form ONd4 tetrahedra that share corners with sixteen ONd4 tetrahedra and edges with six equivalent ONd2Sn2 tetrahedra. In the second O2- site, O2- is bonded to two equivalent Nd3+ and two equivalent Sn4+ atoms to form a mixture of distorted edge and corner-sharing ONd2Sn2 tetrahedra.