data_[Ac2Pm2Er2Te6]
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
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [8.7241]
_cell_length_b [4.5831]
_cell_length_c [10.6938]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.4238]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [AcPmErTe3]
_chemical_formula_sum '[Ac2 Pm2 Er2 Te6]'
_cell_volume [400.6970]
_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  0.1847  0.7500  0.2323  1
  Pm  Pm1  2  0.3574  0.2500  0.8824  1
  Er  Er2  2  0.1397  0.7500  0.6200  1
  Te  Te3  2  0.1092  0.7500  0.8971  1
  Te  Te4  2  0.2392  0.2500  0.4816  1
  Te  Te5  2  0.4615  0.2500  0.2074  1
]