The structure described by AcPm3 is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. Ac(1) is bonded to twelve Pm(1,1,1) atoms to form AcPm12 cuboctahedra that share corners with six equivalent Ac(1)Pm12 cuboctahedra; corners with twelve Pm(1,1)Ac4Pm8 cuboctahedra; edges with eighteen Pm(1,1,1)Ac4Pm8 cuboctahedra; faces with eight equivalent Ac(1)Pm12 cuboctahedra; and faces with twelve Pm(1,1,1)Ac4Pm8 cuboctahedra. There are three inequivalent Pm sites. In the first Pm site, Pm(1) is bonded to four equivalent Ac(1) and eight Pm(1,1) atoms to form PmAc4Pm8 cuboctahedra that share corners with four equivalent Ac(1)Pm12 cuboctahedra; corners with fourteen Pm(1,1)Ac4Pm8 cuboctahedra; edges with six equivalent Ac(1)Pm12 cuboctahedra; edges with twelve Pm(1,1)Ac4Pm8 cuboctahedra; faces with four equivalent Ac(1)Pm12 cuboctahedra; and faces with sixteen Pm(1,1,1)Ac4Pm8 cuboctahedra. In the second Pm site, Pm(1) is bonded to four equivalent Ac(1) and eight Pm(1,1,1) atoms to form PmAc4Pm8 cuboctahedra that share corners with four equivalent Ac(1)Pm12 cuboctahedra; corners with fourteen Pm(1,1)Ac4Pm8 cuboctahedra; edges with six equivalent Ac(1)Pm12 cuboctahedra; edges with twelve Pm(1,1,1)Ac4Pm8 cuboctahedra; faces with four equivalent Ac(1)Pm12 cuboctahedra; and faces with sixteen Pm(1,1,1)Ac4Pm8 cuboctahedra. In the third Pm site, Pm(1) is bonded to four equivalent Ac(1) and eight Pm(1,1) atoms to form PmAc4Pm8 cuboctahedra that share corners with four equivalent Ac(1)Pm12 cuboctahedra; corners with fourteen Pm(1,1)Ac4Pm8 cuboctahedra; edges with six equivalent Ac(1)Pm12 cuboctahedra; edges with twelve Pm(1,1)Ac4Pm8 cuboctahedra; faces with four equivalent Ac(1)Pm12 cuboctahedra; and faces with sixteen Pm(1,1,1)Ac4Pm8 cuboctahedra. is represented by the CIF file [CIF]
data_AcPm3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.620
_cell_length_b   7.620
_cell_length_c   5.975
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   300.475
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ac  Ac0  1  0.333  0.667  0.750  1.0
  Ac  Ac1  1  0.667  0.333  0.250  1.0
  Pm  Pm2  1  0.163  0.327  0.250  1.0
  Pm  Pm3  1  0.673  0.837  0.250  1.0
  Pm  Pm4  1  0.163  0.837  0.250  1.0
  Pm  Pm5  1  0.837  0.673  0.750  1.0
  Pm  Pm6  1  0.327  0.163  0.750  1.0
  Pm  Pm7  1  0.837  0.163  0.750  1.0
[/CIF]
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The structure described by AcPm3 is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. Ac(1) is bonded to twelve Pm(1,1,1) atoms to form AcPm12 cuboctahedra that share corners with six equivalent Ac(1)Pm12 cuboctahedra; corners with twelve Pm(1,1)Ac4Pm8 cuboctahedra; edges with eighteen Pm(1,1,1)Ac4Pm8 cuboctahedra; faces with eight equivalent Ac(1)Pm12 cuboctahedra; and faces with twelve Pm(1,1,1)Ac4Pm8 cuboctahedra. There are three inequivalent Pm sites. In the first Pm site, Pm(1) is bonded to four equivalent Ac(1) and eight Pm(1,1) atoms to form PmAc4Pm8 cuboctahedra that share corners with four equivalent Ac(1)Pm12 cuboctahedra; corners with fourteen Pm(1,1)Ac4Pm8 cuboctahedra; edges with six equivalent Ac(1)Pm12 cuboctahedra; edges with twelve Pm(1,1)Ac4Pm8 cuboctahedra; faces with four equivalent Ac(1)Pm12 cuboctahedra; and faces with sixteen Pm(1,1,1)Ac4Pm8 cuboctahedra. In the second Pm site, Pm(1) is bonded to four equivalent Ac(1) and eight Pm(1,1,1) atoms to form PmAc4Pm8 cuboctahedra that share corners with four equivalent Ac(1)Pm12 cuboctahedra; corners with fourteen Pm(1,1)Ac4Pm8 cuboctahedra; edges with six equivalent Ac(1)Pm12 cuboctahedra; edges with twelve Pm(1,1,1)Ac4Pm8 cuboctahedra; faces with four equivalent Ac(1)Pm12 cuboctahedra; and faces with sixteen Pm(1,1,1)Ac4Pm8 cuboctahedra. In the third Pm site, Pm(1) is bonded to four equivalent Ac(1) and eight Pm(1,1) atoms to form PmAc4Pm8 cuboctahedra that share corners with four equivalent Ac(1)Pm12 cuboctahedra; corners with fourteen Pm(1,1)Ac4Pm8 cuboctahedra; edges with six equivalent Ac(1)Pm12 cuboctahedra; edges with twelve Pm(1,1)Ac4Pm8 cuboctahedra; faces with four equivalent Ac(1)Pm12 cuboctahedra; and faces with sixteen Pm(1,1,1)Ac4Pm8 cuboctahedra. is represented by the CIF file [CIF]
data_AcPm3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.620
_cell_length_b   7.620
_cell_length_c   5.975
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   300.475
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Ac  Ac0  1  0.333  0.667  0.750  1.0
  Ac  Ac1  1  0.667  0.333  0.250  1.0
  Pm  Pm2  1  0.163  0.327  0.250  1.0
  Pm  Pm3  1  0.673  0.837  0.250  1.0
  Pm  Pm4  1  0.163  0.837  0.250  1.0
  Pm  Pm5  1  0.837  0.673  0.750  1.0
  Pm  Pm6  1  0.327  0.163  0.750  1.0
  Pm  Pm7  1  0.837  0.163  0.750  1.0
[/CIF]
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