Materials Data on KAuF6 by Materials Project

Abstract

KAuF6 crystallizes in the trigonal R-3m space group. The structure is three-dimensional. K1+ is bonded to twelve equivalent F1- atoms to form KF12 cuboctahedra that share corners with six equivalent AuF6 octahedra, edges with six equivalent KF12 cuboctahedra, and faces with two equivalent AuF6 octahedra. The corner-sharing octahedral tilt angles are 36°. There are six shorter (2.98 Å) and six longer (3.00 Å) K–F bond lengths. Au5+ is bonded to six equivalent F1- atoms to form AuF6 octahedra that share corners with six equivalent KF12 cuboctahedra and faces with two equivalent KF12 cuboctahedra. All Au–F bond lengths are 1.95 Å. F1- is bonded in a distorted single-bond geometry to two equivalent K1+ and one Au5+ atom.