data_[Ac2Pm14Er8]
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
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.2920]
_cell_length_b [6.1449]
_cell_length_c [12.6790]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.8991]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [AcPm7Er4]
_chemical_formula_sum '[Ac2 Pm14 Er8]'
_cell_volume [838.4237]
_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  2  0.0000  0.0000  0.0000  1
  Pm  Pm1  4  0.0557  0.0000  0.3391  1
  Pm  Pm2  4  0.1300  0.5000  0.5052  1
  Pm  Pm3  4  0.2144  0.0000  0.9170  1
  Pm  Pm4  2  0.0000  0.5000  0.0000  1
  Er  Er5  4  0.1292  0.5000  0.7754  1
  Er  Er6  4  0.2442  0.5000  0.3175  1
]