PmCd3 crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded to twelve equivalent Cd(1) atoms to form a mixture of corner and face-sharing PmCd12 cuboctahedra. Cd(1) is bonded in a 4-coordinate geometry to four equivalent Pm(1) atoms.
PmCd3 crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded to twelve equivalent Cd(1) atoms to form a mixture of corner and face-sharing PmCd12 cuboctahedra. There are six shorter (3.21 Å) and six longer (3.37 Å) Pm(1)-Cd(1) bond lengths. Cd(1) is bonded in a 4-coordinate geometry to four equivalent Pm(1) atoms.