Materials Data on Rb2ErCuCl6 by Materials Project

Rb2ErCuCl6 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 ErCl6 octahedra, and faces with four equivalent CuCl6 octahedra. All Rb–Cl bond lengths are 3.66 Å. Er3+ is bonded to six equivalent Cl1- atoms to form ErCl6 octahedra that share corners with six equivalent CuCl6 octahedra and faces with eight equivalent RbCl12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Er–Cl bond lengths are 2.61 Å. Cu1+ is bonded to six equivalent Cl1- atoms to form CuCl6 octahedra that share corners with six equivalent ErCl6 octahedra and faces with eight equivalent RbCl12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Cu–Cl bond lengths are 2.57 Å. Cl1- is bonded in a distorted linear geometry to four equivalent Rb1+, one Er3+, and one Cu1+ atom.