Tm3Hg is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Tm(1) is bonded to eight equivalent Tm(1) and four equivalent Hg(1) atoms to form distorted TmTm8Hg4 cuboctahedra that share corners with twelve equivalent Tm(1)Tm8Hg4 cuboctahedra, edges with eight equivalent Hg(1)Tm12 cuboctahedra, edges with sixteen equivalent Tm(1)Tm8Hg4 cuboctahedra, faces with four equivalent Hg(1)Tm12 cuboctahedra, and faces with fourteen equivalent Tm(1)Tm8Hg4 cuboctahedra. Hg(1) is bonded to twelve equivalent Tm(1) atoms to form HgTm12 cuboctahedra that share corners with twelve equivalent Hg(1)Tm12 cuboctahedra, edges with twenty-four equivalent Tm(1)Tm8Hg4 cuboctahedra, faces with six equivalent Hg(1)Tm12 cuboctahedra, and faces with twelve equivalent Tm(1)Tm8Hg4 cuboctahedra.
Tm3Hg is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Tm(1) is bonded to eight equivalent Tm(1) and four equivalent Hg(1) atoms to form distorted TmTm8Hg4 cuboctahedra that share corners with twelve equivalent Tm(1)Tm8Hg4 cuboctahedra, edges with eight equivalent Hg(1)Tm12 cuboctahedra, edges with sixteen equivalent Tm(1)Tm8Hg4 cuboctahedra, faces with four equivalent Hg(1)Tm12 cuboctahedra, and faces with fourteen equivalent Tm(1)Tm8Hg4 cuboctahedra. All Tm(1)-Tm(1) bond lengths are 3.35 Å. All Tm(1)-Hg(1) bond lengths are 3.35 Å. Hg(1) is bonded to twelve equivalent Tm(1) atoms to form HgTm12 cuboctahedra that share corners with twelve equivalent Hg(1)Tm12 cuboctahedra, edges with twenty-four equivalent Tm(1)Tm8Hg4 cuboctahedra, faces with six equivalent Hg(1)Tm12 cuboctahedra, and faces with twelve equivalent Tm(1)Tm8Hg4 cuboctahedra.