Materials Data on Sm2(PPt2)3 by Materials Project

Abstract

Sm2(Pt2P)3 crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Sm+2.50+ is bonded in a 9-coordinate geometry to nine Pt2- atoms. There are a spread of Sm–Pt bond distances ranging from 3.12–3.39 Å. There are three inequivalent Pt2- sites. In the first Pt2- site, Pt2- is bonded in a 12-coordinate geometry to two equivalent Sm+2.50+, eight Pt2-, and two equivalent P+2.33+ atoms. There are a spread of Pt–Pt bond distances ranging from 2.92–3.01 Å. Both Pt–P bond lengths are 2.41 Å. In the second Pt2- site, Pt2- is bonded in a 12-coordinate geometry to two equivalent Sm+2.50+, six equivalent Pt2-, and two equivalent P+2.33+ atoms. Both Pt–P bond lengths are 2.37 Å. In the third Pt2- site, Pt2- is bonded in a 3-coordinate geometry to five equivalent Sm+2.50+ and three P+2.33+ atoms. All Pt–P bond lengths are 2.35 Å. There are two inequivalent P+2.33+ sites. In the first P+2.33+ site, P+2.33+ is bonded in a 5-coordinate geometry to five Pt2- atoms. In the second P+2.33+ site, P+2.33+ is bonded to four equivalent Pt2- atoms to form corner-sharing PPt4 tetrahedra.