PmAu3 crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded to twelve equivalent Au(1) atoms to form a mixture of face and corner-sharing PmAu12 cuboctahedra. Au(1) is bonded in a 4-coordinate geometry to four equivalent Pm(1) atoms.
PmAu3 crystallizes in the hexagonal P6_3/mmc space group. Pm(1) is bonded to twelve equivalent Au(1) atoms to form a mixture of face and corner-sharing PmAu12 cuboctahedra. There are six shorter (3.09 Å) and six longer (3.23 Å) Pm(1)-Au(1) bond lengths. Au(1) is bonded in a 4-coordinate geometry to four equivalent Pm(1) atoms.