data_[Pm10Cu12]
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
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [4.3893]
_cell_length_b [29.4553]
_cell_length_c [3.8023]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Pm5Cu6]
_chemical_formula_sum '[Pm10 Cu12]'
_cell_volume [491.5899]
_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  0.0000  0.1972  0.5000  1
  Pm  Pm1  4  0.0000  0.3842  0.0000  1
  Pm  Pm2  2  0.0000  0.0000  0.0000  1
  Cu  Cu3  4  0.0000  0.0855  0.5000  1
  Cu  Cu4  4  0.0000  0.2747  0.0000  1
  Cu  Cu5  4  0.0000  0.4590  0.5000  1
]