Materials Data on K9Li3I2O13 by Materials Project

Abstract

K9Li3O13I2 crystallizes in the hexagonal P-62c space group. The structure is three-dimensional. there are three inequivalent K sites. In the first K site, K is bonded in a 6-coordinate geometry to six O atoms. There are a spread of K–O bond distances ranging from 2.63–2.86 Å. In the second K site, K is bonded in a 4-coordinate geometry to four O atoms. There are two shorter (2.74 Å) and two longer (2.89 Å) K–O bond lengths. In the third K site, K is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of K–O bond distances ranging from 2.78–3.18 Å. Li is bonded in a distorted rectangular see-saw-like geometry to four O atoms. There is two shorter (1.92 Å) and two longer (1.95 Å) Li–O bond length. There are three inequivalent O sites. In the first O site, O is bonded in a trigonal planar geometry to three equivalent K atoms. In the second O site, O is bonded in a 6-coordinate geometry to four K, one Li, and one I atom. The O–I bond length is 1.93 Å. In the third O site, O is bonded in a 6-coordinate geometry to four K, one Li, and one I atom. The O–I bond length is 1.92 Å. I is bonded in an octahedral geometry to six O atoms.