Materials Data on Sn4B3Ir7 by Materials Project

Abstract

Ir7B3Sn4 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. there are two inequivalent Ir sites. In the first Ir site, Ir is bonded in a 2-coordinate geometry to two equivalent B and four Sn atoms. Both Ir–B bond lengths are 2.16 Å. There are a spread of Ir–Sn bond distances ranging from 2.73–2.95 Å. In the second Ir site, Ir is bonded to six equivalent B atoms to form face-sharing IrB6 octahedra. All Ir–B bond lengths are 2.31 Å. B is bonded to six Ir atoms to form a mixture of distorted edge and corner-sharing BIr6 pentagonal pyramids. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 6-coordinate geometry to six equivalent Ir atoms. In the second Sn site, Sn is bonded in a 6-coordinate geometry to six equivalent Ir atoms.