data_[Pm2Er2Te4Cl2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Er  1.2400  1.7500  1.0300
  Te  2.1000  1.4000  1.2933
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P4/nmm]
_cell_length_a [4.3165]
_cell_length_b [4.3165]
_cell_length_c [14.9651]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [129]
_chemical_formula_structural [PmErTe2Cl]
_chemical_formula_sum '[Pm2 Er2 Te4 Cl2]'
_cell_volume [278.8347]
_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
[
  Pm  Pm0  2  0.0000  0.5000  0.3663  1
  Er  Er1  2  0.0000  0.5000  0.9170  1
  Te  Te2  2  0.0000  0.5000  0.1224  1
  Te  Te3  2  0.0000  0.5000  0.7071  1
  Cl  Cl4  2  0.0000  0.0000  0.5000  1
]