data_[Pm8Cu12Ge20]
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
  Ge  2.0100  1.2500  0.7700
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [9.9635]
_cell_length_b [12.1637]
_cell_length_c [6.1133]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Pm2Cu3Ge5]
_chemical_formula_sum '[Pm8 Cu12 Ge20]'
_cell_volume [740.8904]
_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  8  0.2427  0.3754  0.5000  1
  Cu  Cu1  8  0.1185  0.3668  0.0000  1
  Cu  Cu2  4  0.0000  0.0000  0.2500  1
  Ge  Ge3  8  0.0000  0.2399  0.2500  1
  Ge  Ge4  8  0.1458  0.1090  0.5000  1
  Ge  Ge5  4  0.0000  0.5000  0.2500  1
]