(K2BrCl6)2F2 crystallizes in the cubic Fm-3m space group. The structure consists of four hydrofluoric acid atoms inside a K2BrCl6 framework. In the K2BrCl6 framework, 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, and faces with four equivalent Br(1)Cl6 octahedra. Br(1) is bonded to six equivalent Cl(1) atoms to form BrCl6 octahedra that share faces with eight equivalent K(1)Cl12 cuboctahedra. Cl(1) is bonded to four equivalent K(1) and one Br(1) atom to form a mixture of face, corner, and edge-sharing ClK4Br square pyramids.
(K2BrCl6)2F2 crystallizes in the cubic Fm-3m space group. The structure consists of four hydrofluoric acid atoms inside a K2BrCl6 framework. In the K2BrCl6 framework, 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, and faces with four equivalent Br(1)Cl6 octahedra. All K(1)-Cl(1) bond lengths are 3.58 Å. Br(1) is bonded to six equivalent Cl(1) atoms to form BrCl6 octahedra that share faces with eight equivalent K(1)Cl12 cuboctahedra. All Br(1)-Cl(1) bond lengths are 2.46 Å. Cl(1) is bonded to four equivalent K(1) and one Br(1) atom to form a mixture of face, corner, and edge-sharing ClK4Br square pyramids.