Materials Data on Y3Ga7Cu4 by Materials Project

Abstract

Y3Cu4Ga7 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Y sites. In the first Y site, Y is bonded in a 10-coordinate geometry to five Cu and ten Ga atoms. There are a spread of Y–Cu bond distances ranging from 3.02–3.38 Å. There are a spread of Y–Ga bond distances ranging from 3.04–3.37 Å. In the second Y site, Y is bonded to four equivalent Cu and eight Ga atoms to form distorted YGa8Cu4 cuboctahedra that share edges with two equivalent GaY4Ga4Cu4 cuboctahedra and faces with two equivalent YGa8Cu4 cuboctahedra. All Y–Cu bond lengths are 3.14 Å. There are a spread of Y–Ga bond distances ranging from 3.07–3.15 Å. There are two inequivalent Cu sites. In the first Cu site, Cu is bonded in a 10-coordinate geometry to two equivalent Y, one Cu, and seven Ga atoms. The Cu–Cu bond length is 2.51 Å. There are a spread of Cu–Ga bond distances ranging from 2.55–2.79 Å. In the second Cu site, Cu is bonded in a 9-coordinate geometry to five Y, one Cu, and four Ga atoms. There are a spread of Cu–Ga bond distances ranging from 2.45–2.63 Å. There are four inequivalent Ga sites. In the first Ga site, Ga is bonded in a 10-coordinate geometry to four Y, two equivalent Cu, and four Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.58–2.72 Å. In the second Ga site, Ga is bonded in a 10-coordinate geometry to four Y, five Cu, and one Ga atom. The Ga–Ga bond length is 2.77 Å. In the third Ga site, Ga is bonded to four equivalent Y, four equivalent Cu, and four Ga atoms to form GaY4Ga4Cu4 cuboctahedra that share edges with two equivalent YGa8Cu4 cuboctahedra and faces with two equivalent GaY4Ga4Cu4 cuboctahedra. In the fourth Ga site, Ga is bonded in a 9-coordinate geometry to four Y, two Cu, and three equivalent Ga atoms.