TmHg3 crystallizes in the hexagonal P6_3/mmc space group. Tm(1) is bonded to twelve equivalent Hg(1) atoms to form a mixture of face and corner-sharing TmHg12 cuboctahedra. Hg(1) is bonded in a 4-coordinate geometry to four equivalent Tm(1) atoms.
TmHg3 crystallizes in the hexagonal P6_3/mmc space group. Tm(1) is bonded to twelve equivalent Hg(1) atoms to form a mixture of face and corner-sharing TmHg12 cuboctahedra. There are six shorter (3.10 Å) and six longer (3.27 Å) Tm(1)-Hg(1) bond lengths. Hg(1) is bonded in a 4-coordinate geometry to four equivalent Tm(1) atoms.