data_[Ac1Pm3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Pm  1.1300  1.8500  1.1100
]
_symmetry_space_group_name_H-M [Pmm2]
_cell_length_a [3.7799]
_cell_length_b [6.0564]
_cell_length_c [6.4599]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [AcPm3]
_chemical_formula_sum '[Ac1 Pm3]'
_cell_volume [147.8844]
_cell_formula_units_Z [1]
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  0.0000  0.5000  0.3344  1
  Pm  Pm1  1  0.0000  0.0000  0.9958  1
  Pm  Pm2  1  0.5000  0.0000  0.5025  1
  Pm  Pm3  1  0.5000  0.5000  0.8339  1
]