data_[Pm6Co4Cu8]
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 [C2/m]
_cell_length_a [10.5300]
_cell_length_b [4.1510]
_cell_length_c [8.1655]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.2264]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm3(CoCu2)2]
_chemical_formula_sum '[Pm6 Co4 Cu8]'
_cell_volume [342.6945]
_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  4  0.1736  0.5000  0.6566  1
  Pm  Pm1  2  0.0000  0.0000  0.0000  1
  Co  Co2  4  0.1070  0.5000  0.2746  1
  Cu  Cu3  4  0.0485  0.0000  0.3802  1
  Cu  Cu4  4  0.2202  0.5000  0.0590  1
]