Materials Data on KRb2AuCl6 by Materials Project
Rb2KAuCl6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Rb1+ is bonded to twelve equivalent Cl1- atoms to form RbCl12 cuboctahedra that share corners with twelve equivalent RbCl12 cuboctahedra, faces with six equivalent RbCl12 cuboctahedra, faces with four equivalent KCl6 octahedra, and faces with four equivalent AuCl6 octahedra. All Rb–Cl bond lengths are 3.89 Å. K1+ is bonded to six equivalent Cl1- atoms to form KCl6 octahedra that share corners with six equivalent AuCl6 octahedra and faces with eight equivalent RbCl12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All K–Cl bond lengths are 2.98 Å. Au3+ is bonded to six equivalent Cl1- atoms to form AuCl6 octahedra that share corners with six equivalent KCl6 octahedra and faces with eight equivalent RbCl12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Au–Cl bond lengths are 2.52 Å. Cl1- is bonded in a distorted linear geometry to four equivalent Rb1+, one K1+, and one Au3+ atom.