Materials Data on K3W2Cl9 by Materials Project
K3W2Cl9 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 9-coordinate geometry to nine Cl1- atoms. There are three shorter (3.24 Å) and six longer (3.44 Å) K–Cl bond lengths. In the second K1+ site, K1+ is bonded in a 9-coordinate geometry to nine Cl1- atoms. There are a spread of K–Cl bond distances ranging from 3.31–3.63 Å. W3+ is bonded to six Cl1- atoms to form face-sharing WCl6 octahedra. There are three shorter (2.42 Å) and three longer (2.54 Å) W–Cl bond lengths. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted see-saw-like geometry to three K1+ and one W3+ atom. In the second Cl1- site, Cl1- is bonded in a 5-coordinate geometry to three K1+ and two equivalent W3+ atoms.