Materials Data on Sc11Os4 by Materials Project

Abstract

Sc16Os7Sc6Os crystallizes in the cubic Fm-3m space group. The structure is three-dimensional and consists of four Sc6Os clusters and one Sc16Os7 framework. In each Sc6Os cluster, Sc is bonded in a single-bond geometry to one Os atom. The Sc–Os bond length is 2.66 Å. Os is bonded in an octahedral geometry to six equivalent Sc atoms. In the Sc16Os7 framework, there are two inequivalent Sc sites. In the first Sc site, Sc is bonded in a distorted trigonal planar geometry to three equivalent Os atoms. All Sc–Os bond lengths are 2.74 Å. In the second Sc site, Sc is bonded to four Os atoms to form a mixture of distorted corner and edge-sharing ScOs4 tetrahedra. There are one shorter (2.72 Å) and three longer (2.96 Å) Sc–Os bond lengths. There are two inequivalent Os sites. In the first Os site, Os is bonded in a body-centered cubic geometry to eight equivalent Sc atoms. In the second Os site, Os is bonded in a 12-coordinate geometry to eight Sc atoms.