K2HgAsCl6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. K(1) is bonded to twelve equivalent Cl(1) atoms to form KCl12 cuboctahedra that share corners with twelve equivalent K(1)Cl12 cuboctahedra, faces with six equivalent K(1)Cl12 cuboctahedra, faces with four equivalent Hg(1)Cl6 octahedra, and faces with four equivalent As(1)Cl6 octahedra. Hg(1) is bonded to six equivalent Cl(1) atoms to form HgCl6 octahedra that share corners with six equivalent As(1)Cl6 octahedra and faces with eight equivalent K(1)Cl12 cuboctahedra. The corner-sharing octahedra are not tilted. As(1) is bonded to six equivalent Cl(1) atoms to form AsCl6 octahedra that share corners with six equivalent Hg(1)Cl6 octahedra and faces with eight equivalent K(1)Cl12 cuboctahedra. The corner-sharing octahedra are not tilted. Cl(1) is bonded in a linear geometry to four equivalent K(1), one Hg(1), and one As(1) atom.
K2HgAsCl6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. K(1) is bonded to twelve equivalent Cl(1) atoms to form KCl12 cuboctahedra that share corners with twelve equivalent K(1)Cl12 cuboctahedra, faces with six equivalent K(1)Cl12 cuboctahedra, faces with four equivalent Hg(1)Cl6 octahedra, and faces with four equivalent As(1)Cl6 octahedra. All K(1)-Cl(1) bond lengths are 3.78 Å. Hg(1) is bonded to six equivalent Cl(1) atoms to form HgCl6 octahedra that share corners with six equivalent As(1)Cl6 octahedra and faces with eight equivalent K(1)Cl12 cuboctahedra. The corner-sharing octahedra are not tilted. All Hg(1)-Cl(1) bond lengths are 2.82 Å. As(1) is bonded to six equivalent Cl(1) atoms to form AsCl6 octahedra that share corners with six equivalent Hg(1)Cl6 octahedra and faces with eight equivalent K(1)Cl12 cuboctahedra. The corner-sharing octahedra are not tilted. All As(1)-Cl(1) bond lengths are 2.51 Å. Cl(1) is bonded in a linear geometry to four equivalent K(1), one Hg(1), and one As(1) atom.