Materials Data on KGaI4 by Materials Project
KGaI4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight I1- atoms. There are a spread of K–I bond distances ranging from 3.67–4.21 Å. Ga3+ is bonded in a tetrahedral geometry to four I1- atoms. There are two shorter (2.59 Å) and two longer (2.60 Å) Ga–I bond lengths. There are four inequivalent I1- sites. In the first I1- site, I1- is bonded in a 1-coordinate geometry to two equivalent K1+ and one Ga3+ atom. In the second I1- site, I1- is bonded in a 1-coordinate geometry to two equivalent K1+ and one Ga3+ atom. In the third I1- site, I1- is bonded in a 3-coordinate geometry to two equivalent K1+ and one Ga3+ atom. In the fourth I1- site, I1- is bonded in a 1-coordinate geometry to two equivalent K1+ and one Ga3+ atom.