Ni3Hg is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Ni(1) is bonded to eight equivalent Ni(1) and four equivalent Hg(1) atoms to form NiNi8Hg4 cuboctahedra that share corners with twelve equivalent Ni(1)Ni8Hg4 cuboctahedra, edges with eight equivalent Hg(1)Ni12 cuboctahedra, edges with sixteen equivalent Ni(1)Ni8Hg4 cuboctahedra, faces with four equivalent Hg(1)Ni12 cuboctahedra, and faces with fourteen equivalent Ni(1)Ni8Hg4 cuboctahedra. Hg(1) is bonded to twelve equivalent Ni(1) atoms to form HgNi12 cuboctahedra that share corners with twelve equivalent Hg(1)Ni12 cuboctahedra, edges with twenty-four equivalent Ni(1)Ni8Hg4 cuboctahedra, faces with six equivalent Hg(1)Ni12 cuboctahedra, and faces with twelve equivalent Ni(1)Ni8Hg4 cuboctahedra.
Ni3Hg is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Ni(1) is bonded to eight equivalent Ni(1) and four equivalent Hg(1) atoms to form NiNi8Hg4 cuboctahedra that share corners with twelve equivalent Ni(1)Ni8Hg4 cuboctahedra, edges with eight equivalent Hg(1)Ni12 cuboctahedra, edges with sixteen equivalent Ni(1)Ni8Hg4 cuboctahedra, faces with four equivalent Hg(1)Ni12 cuboctahedra, and faces with fourteen equivalent Ni(1)Ni8Hg4 cuboctahedra. All Ni(1)-Ni(1) bond lengths are 2.65 Å. All Ni(1)-Hg(1) bond lengths are 2.65 Å. Hg(1) is bonded to twelve equivalent Ni(1) atoms to form HgNi12 cuboctahedra that share corners with twelve equivalent Hg(1)Ni12 cuboctahedra, edges with twenty-four equivalent Ni(1)Ni8Hg4 cuboctahedra, faces with six equivalent Hg(1)Ni12 cuboctahedra, and faces with twelve equivalent Ni(1)Ni8Hg4 cuboctahedra.