data_[Pm8Mg4Bi12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Mg  1.3100  1.5000  0.8600
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [14.0987]
_cell_length_b [6.4966]
_cell_length_c [9.0831]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.7216]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pm2MgBi3]
_chemical_formula_sum '[Pm8 Mg4 Bi12]'
_cell_volume [787.9342]
_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  0.1700  0.4994  0.5849  1
  Mg  Mg1  4  0.0000  0.0518  0.7500  1
  Bi  Bi2  8  0.1578  0.0004  0.0788  1
  Bi  Bi3  4  0.0000  0.4686  0.2500  1
]