data_[Pm2Er2Pt4]
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
  Pt  2.2800  1.3500  0.8050
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.5023]
_cell_length_b [3.8122]
_cell_length_c [10.6504]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [PmErPt2]
_chemical_formula_sum '[Pm2 Er2 Pt4]'
_cell_volume [182.7991]
_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  0.5000  0.0000  0.5560  1
  Er  Er1  2  0.0000  0.0000  0.2808  1
  Pt  Pt2  2  0.0000  0.0000  0.0041  1
  Pt  Pt3  2  0.5000  0.0000  0.8284  1
]