Materials Data on KAuCl4 by Materials Project
KAuCl4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. K1+ is bonded in a 9-coordinate geometry to nine Cl1- atoms. There are a spread of K–Cl bond distances ranging from 3.24–3.71 Å. There are two inequivalent Au3+ sites. In the first Au3+ site, Au3+ is bonded in a square co-planar geometry to four Cl1- atoms. There are two shorter (2.32 Å) and two longer (2.33 Å) Au–Cl bond lengths. In the second Au3+ site, Au3+ is bonded in a square co-planar geometry to four Cl1- atoms. All Au–Cl bond lengths are 2.32 Å. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 1-coordinate geometry to two equivalent K1+ and one Au3+ atom. In the second Cl1- site, Cl1- is bonded in a 4-coordinate geometry to three equivalent K1+ and one Au3+ atom. In the third Cl1- site, Cl1- is bonded in a 3-coordinate geometry to two equivalent K1+ and one Au3+ atom. In the fourth Cl1- site, Cl1- is bonded in a 3-coordinate geometry to two equivalent K1+ and one Au3+ atom.