data_[Ac2Pm2Y4Er2]
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
  Y  1.2200  1.8000  1.0400
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.4088]
_cell_length_b [5.8616]
_cell_length_c [9.8395]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.8689]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [AcPmY2Er]
_chemical_formula_sum '[Ac2 Pm2 Y4 Er2]'
_cell_volume [349.7652]
_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  0.1398  0.2500  0.1071  1
  Pm  Pm1  2  0.4810  0.7500  0.1080  1
  Y  Y2  2  0.2582  0.7500  0.6922  1
  Y  Y3  2  0.3350  0.2500  0.5033  1
  Er  Er4  2  0.0717  0.7500  0.3113  1
]