Materials Data on TaCoSn2 by Materials Project

Abstract

TaCoSn2 crystallizes in the cubic F-43m space group. The structure is three-dimensional. Ta is bonded in a distorted body-centered cubic geometry to four equivalent Co and ten Sn atoms. All Ta–Co bond lengths are 2.91 Å. There are four shorter (2.91 Å) and six longer (3.36 Å) Ta–Sn bond lengths. Co is bonded in a distorted body-centered cubic geometry to four equivalent Ta and four equivalent Sn atoms. All Co–Sn bond lengths are 2.91 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded to four equivalent Ta and four equivalent Sn atoms to form distorted edge-sharing SnTa4Sn4 tetrahedra. All Sn–Sn bond lengths are 2.91 Å. In the second Sn site, Sn is bonded in a 4-coordinate geometry to six equivalent Ta, four equivalent Co, and four equivalent Sn atoms.