Pm3Hg is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded in a 4-coordinate geometry to four equivalent Hg(1) atoms. Hg(1) is bonded to twelve equivalent Pm(1) atoms to form a mixture of corner and face-sharing HgPm12 cuboctahedra.
Pm3Hg is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded in a 4-coordinate geometry to four equivalent Hg(1) atoms. There are two shorter (3.35 Å) and two longer (3.52 Å) Pm(1)-Hg(1) bond lengths. Hg(1) is bonded to twelve equivalent Pm(1) atoms to form a mixture of corner and face-sharing HgPm12 cuboctahedra.