Materials Data on K3Co by Materials Project

Abstract

K3Co is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent K sites. In the first K site, K is bonded in a 12-coordinate geometry to four equivalent K and four equivalent Co atoms. All K–K bond lengths are 3.98 Å. All K–Co bond lengths are 3.98 Å. In the second K site, K is bonded to eight equivalent K and four equivalent Co atoms to form a mixture of distorted corner, edge, and face-sharing KK8Co4 cuboctahedra. All K–Co bond lengths are 4.18 Å. Co is bonded in a distorted body-centered cubic geometry to twelve K atoms.