OsZn3 is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. Os(1) is bonded to four equivalent Zn(2) and eight equivalent Zn(1) atoms to form OsZn12 cuboctahedra that share corners with four equivalent Os(1)Zn12 cuboctahedra, edges with eight equivalent Os(1)Zn12 cuboctahedra, edges with sixteen equivalent Zn(1)Zn8Os4 cuboctahedra, faces with four equivalent Os(1)Zn12 cuboctahedra, and faces with eight equivalent Zn(1)Zn8Os4 cuboctahedra. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to four equivalent Os(1), four equivalent Zn(1), and four equivalent Zn(2) atoms to form distorted ZnZn8Os4 cuboctahedra that share corners with twelve equivalent Zn(1)Zn8Os4 cuboctahedra, edges with eight equivalent Os(1)Zn12 cuboctahedra, edges with eight equivalent Zn(1)Zn8Os4 cuboctahedra, faces with four equivalent Os(1)Zn12 cuboctahedra, and faces with ten equivalent Zn(1)Zn8Os4 cuboctahedra. In the second Zn site, Zn(2) is bonded in a square co-planar geometry to four equivalent Os(1) and eight equivalent Zn(1) atoms.
OsZn3 is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. Os(1) is bonded to four equivalent Zn(2) and eight equivalent Zn(1) atoms to form OsZn12 cuboctahedra that share corners with four equivalent Os(1)Zn12 cuboctahedra, edges with eight equivalent Os(1)Zn12 cuboctahedra, edges with sixteen equivalent Zn(1)Zn8Os4 cuboctahedra, faces with four equivalent Os(1)Zn12 cuboctahedra, and faces with eight equivalent Zn(1)Zn8Os4 cuboctahedra. All Os(1)-Zn(2) bond lengths are 2.61 Å. All Os(1)-Zn(1) bond lengths are 2.78 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to four equivalent Os(1), four equivalent Zn(1), and four equivalent Zn(2) atoms to form distorted ZnZn8Os4 cuboctahedra that share corners with twelve equivalent Zn(1)Zn8Os4 cuboctahedra, edges with eight equivalent Os(1)Zn12 cuboctahedra, edges with eight equivalent Zn(1)Zn8Os4 cuboctahedra, faces with four equivalent Os(1)Zn12 cuboctahedra, and faces with ten equivalent Zn(1)Zn8Os4 cuboctahedra. All Zn(1)-Zn(1) bond lengths are 2.61 Å. All Zn(1)-Zn(2) bond lengths are 2.78 Å. In the second Zn site, Zn(2) is bonded in a square co-planar geometry to four equivalent Os(1) and eight equivalent Zn(1) atoms.