Materials Data on Ta4Co2N by Materials Project

Abstract

Ta4Co2N crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a distorted hexagonal planar geometry to six equivalent Co atoms. All Ta–Co bond lengths are 2.49 Å. In the second Ta site, Ta is bonded in a distorted bent 150 degrees geometry to four equivalent Co and two equivalent N atoms. There are two shorter (2.79 Å) and two longer (3.00 Å) Ta–Co bond lengths. Both Ta–N bond lengths are 2.17 Å. Co is bonded in a 12-coordinate geometry to nine Ta and three equivalent Co atoms. All Co–Co bond lengths are 2.63 Å. N is bonded to six equivalent Ta atoms to form corner-sharing NTa6 octahedra. The corner-sharing octahedral tilt angles are 39°.