data_[Pm8Co8Cu2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Co  1.8800  1.3500  0.7683
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [P4_2/n]
_cell_length_a [8.2864]
_cell_length_b [8.2864]
_cell_length_c [5.5098]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [86]
_chemical_formula_structural [Pm4Co4Cu]
_chemical_formula_sum '[Pm8 Co8 Cu2]'
_cell_volume [378.3272]
_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  0.0624  0.2844  0.1516  1
  Co  Co1  8  0.1290  0.2372  0.6596  1
  Cu  Cu2  2  0.0000  0.0000  0.5000  1
]