Materials Data on Sc2CrB6 by Materials Project

Abstract

Sc2CrB6 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. there are two inequivalent Sc2+ sites. In the first Sc2+ site, Sc2+ is bonded in a 10-coordinate geometry to fourteen B1- atoms. There are a spread of Sc–B bond distances ranging from 2.59–2.70 Å. In the second Sc2+ site, Sc2+ is bonded to twelve B1- atoms to form a mixture of edge and face-sharing ScB12 cuboctahedra. There are a spread of Sc–B bond distances ranging from 2.44–2.47 Å. Cr2+ is bonded in a 10-coordinate geometry to ten B1- atoms. There are a spread of Cr–B bond distances ranging from 2.24–2.28 Å. There are six inequivalent B1- sites. In the first B1- site, B1- is bonded in a 9-coordinate geometry to six Sc2+ and three B1- atoms. There are a spread of B–B bond distances ranging from 1.76–1.85 Å. In the second B1- site, B1- is bonded in a 9-coordinate geometry to four equivalent Sc2+, two equivalent Cr2+, and three B1- atoms. There are a spread of B–B bond distances ranging from 1.75–1.77 Å. In the third B1- site, B1- is bonded in a 9-coordinate geometry to four Sc2+, two equivalent Cr2+, and three B1- atoms. The B–B bond length is 1.80 Å. In the fourth B1- site, B1- is bonded in a 9-coordinate geometry to four Sc2+, two equivalent Cr2+, and three B1- atoms. There is one shorter (1.71 Å) and one longer (1.75 Å) B–B bond length. In the fifth B1- site, B1- is bonded in a 9-coordinate geometry to four Sc2+, two equivalent Cr2+, and three B1- atoms. The B–B bond length is 1.79 Å. In the sixth B1- site, B1- is bonded in a 9-coordinate geometry to four Sc2+, two equivalent Cr2+, and three B1- atoms.