data_[Pm12Cu2Pt4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Cu  1.9000  1.3500  0.8200
  Pt  2.2800  1.3500  0.8050
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.9691]
_cell_length_b [7.0483]
_cell_length_c [15.0472]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Pm6CuPt2]
_chemical_formula_sum '[Pm12 Cu2 Pt4]'
_cell_volume [527.0058]
_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  8  0.0000  0.2509  0.1668  1
  Pm  Pm1  4  0.0000  0.2460  0.5000  1
  Cu  Cu2  2  0.0000  0.0000  0.0000  1
  Pt  Pt3  4  0.0000  0.0000  0.3336  1
]