Pm3Al crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded in a 12-coordinate geometry to eight equivalent Pm(1) and four equivalent Al(1) atoms. Al(1) is bonded to twelve equivalent Pm(1) atoms to form a mixture of corner and face-sharing AlPm12 cuboctahedra.
Pm3Al crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded in a 12-coordinate geometry to eight equivalent Pm(1) and four equivalent Al(1) atoms. There are a spread of Pm(1)-Pm(1) bond distances ranging from 3.28-3.78 Å. There are two shorter (3.27 Å) and two longer (3.53 Å) Pm(1)-Al(1) bond lengths. Al(1) is bonded to twelve equivalent Pm(1) atoms to form a mixture of corner and face-sharing AlPm12 cuboctahedra.