Materials Data on K5Se3 by Materials Project

Abstract

K5Se3 crystallizes in the tetragonal I4/m space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 6-coordinate geometry to six Se+1.67- atoms. There are a spread of K–Se bond distances ranging from 3.42–3.64 Å. In the second K1+ site, K1+ is bonded in a 6-coordinate geometry to six Se+1.67- atoms. There are a spread of K–Se bond distances ranging from 3.37–3.60 Å. In the third K1+ site, K1+ is bonded in a 4-coordinate geometry to four equivalent Se+1.67- atoms. All K–Se bond lengths are 3.23 Å. There are two inequivalent Se+1.67- sites. In the first Se+1.67- site, Se+1.67- is bonded in a 10-coordinate geometry to ten K1+ atoms. In the second Se+1.67- site, Se+1.67- is bonded in a 9-coordinate geometry to eight K1+ and one Se+1.67- atom. The Se–Se bond length is 2.44 Å.