Mg2OsS6 crystallizes in the cubic Fm-3m space group. Mg(1) is bonded to twelve equivalent S(1) atoms to form MgS12 cuboctahedra that share corners with twelve equivalent Mg(1)S12 cuboctahedra, faces with six equivalent Mg(1)S12 cuboctahedra, and faces with four equivalent Os(1)S6 octahedra. Os(1) is bonded to six equivalent S(1) atoms to form OsS6 octahedra that share faces with eight equivalent Mg(1)S12 cuboctahedra. S(1) is bonded in a distorted single-bond geometry to four equivalent Mg(1) and one Os(1) atom.
Mg2OsS6 crystallizes in the cubic Fm-3m space group. Mg(1) is bonded to twelve equivalent S(1) atoms to form MgS12 cuboctahedra that share corners with twelve equivalent Mg(1)S12 cuboctahedra, faces with six equivalent Mg(1)S12 cuboctahedra, and faces with four equivalent Os(1)S6 octahedra. All Mg(1)-S(1) bond lengths are 3.14 Å. Os(1) is bonded to six equivalent S(1) atoms to form OsS6 octahedra that share faces with eight equivalent Mg(1)S12 cuboctahedra. All Os(1)-S(1) bond lengths are 2.32 Å. S(1) is bonded in a distorted single-bond geometry to four equivalent Mg(1) and one Os(1) atom.