Materials Data on K2ZnBr4 by Materials Project
K2ZnBr4 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of K–Br bond distances ranging from 3.38–3.96 Å. In the second K1+ site, K1+ is bonded in a 6-coordinate geometry to six Br1- atoms. There are a spread of K–Br bond distances ranging from 3.31–3.50 Å. Zn2+ is bonded in a tetrahedral geometry to four Br1- atoms. There are a spread of Zn–Br bond distances ranging from 2.43–2.45 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 3-coordinate geometry to two K1+ and one Zn2+ atom. In the second Br1- site, Br1- is bonded in a 3-coordinate geometry to four K1+ and one Zn2+ atom. In the third Br1- site, Br1- is bonded in a 5-coordinate geometry to four K1+ and one Zn2+ atom.