Hg3Bi is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Hg(1) is bonded to eight equivalent Hg(1) and four equivalent Bi(1) atoms to form distorted HgHg8Bi4 cuboctahedra that share corners with twelve equivalent Hg(1)Hg8Bi4 cuboctahedra, edges with eight equivalent Bi(1)Hg12 cuboctahedra, edges with sixteen equivalent Hg(1)Hg8Bi4 cuboctahedra, faces with four equivalent Bi(1)Hg12 cuboctahedra, and faces with fourteen equivalent Hg(1)Hg8Bi4 cuboctahedra. Bi(1) is bonded to twelve equivalent Hg(1) atoms to form BiHg12 cuboctahedra that share corners with twelve equivalent Bi(1)Hg12 cuboctahedra, edges with twenty-four equivalent Hg(1)Hg8Bi4 cuboctahedra, faces with six equivalent Bi(1)Hg12 cuboctahedra, and faces with twelve equivalent Hg(1)Hg8Bi4 cuboctahedra.
Hg3Bi is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Hg(1) is bonded to eight equivalent Hg(1) and four equivalent Bi(1) atoms to form distorted HgHg8Bi4 cuboctahedra that share corners with twelve equivalent Hg(1)Hg8Bi4 cuboctahedra, edges with eight equivalent Bi(1)Hg12 cuboctahedra, edges with sixteen equivalent Hg(1)Hg8Bi4 cuboctahedra, faces with four equivalent Bi(1)Hg12 cuboctahedra, and faces with fourteen equivalent Hg(1)Hg8Bi4 cuboctahedra. All Hg(1)-Hg(1) bond lengths are 3.37 Å. All Hg(1)-Bi(1) bond lengths are 3.37 Å. Bi(1) is bonded to twelve equivalent Hg(1) atoms to form BiHg12 cuboctahedra that share corners with twelve equivalent Bi(1)Hg12 cuboctahedra, edges with twenty-four equivalent Hg(1)Hg8Bi4 cuboctahedra, faces with six equivalent Bi(1)Hg12 cuboctahedra, and faces with twelve equivalent Hg(1)Hg8Bi4 cuboctahedra.