data_[Pm12Ga20Si8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ga  1.8100  1.3000  0.7600
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [11.6369]
_cell_length_b [12.3064]
_cell_length_c [6.0676]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Pm3Ga5Si2]
_chemical_formula_sum '[Pm12 Ga20 Si8]'
_cell_volume [868.9251]
_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  0.2366  0.3772  0.5000  1
  Pm  Pm1  4  0.0000  0.0000  0.2500  1
  Ga  Ga2  8  0.0000  0.2459  0.2500  1
  Ga  Ga3  8  0.1284  0.3719  0.0000  1
  Ga  Ga4  4  0.0000  0.5000  0.2500  1
  Si  Si5  8  0.1628  0.1331  0.5000  1
]