PmS3 crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded to twelve equivalent S(1) atoms to form a mixture of distorted corner and face-sharing PmS12 cuboctahedra. S(1) is bonded in a 6-coordinate geometry to four equivalent Pm(1) and two equivalent S(1) atoms.
PmS3 crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded to twelve equivalent S(1) atoms to form a mixture of distorted corner and face-sharing PmS12 cuboctahedra. There are six shorter (2.86 Å) and six longer (3.24 Å) Pm(1)-S(1) bond lengths. S(1) is bonded in a 6-coordinate geometry to four equivalent Pm(1) and two equivalent S(1) atoms. Both S(1)-S(1) bond lengths are 2.70 Å.