data_[Pm4Cu4P4]
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
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [6.9803]
_cell_length_b [4.1339]
_cell_length_c [8.5926]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [PmCuP]
_chemical_formula_sum '[Pm4 Cu4 P4]'
_cell_volume [247.9435]
_cell_formula_units_Z [4]
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  0.1537  0.7500  0.3436  1
  Cu  Cu1  4  0.0231  0.2500  0.0898  1
  P  P2  4  0.1460  0.7500  0.6737  1
]