data_[Pm12Ga2Se10]
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
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.3318]
_cell_length_b [12.6380]
_cell_length_c [7.3084]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.4246]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm6GaSe5]
_chemical_formula_sum '[Pm12 Ga2 Se10]'
_cell_volume [638.6480]
_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  8  0.2449  0.1634  0.2458  1
  Pm  Pm1  4  0.2444  0.0000  0.7550  1
  Ga  Ga2  2  0.0000  0.0000  0.0000  1
  Se  Se3  4  0.0000  0.1684  0.5000  1
  Se  Se4  4  0.0000  0.3336  0.0000  1
  Se  Se5  2  0.0000  0.5000  0.5000  1
]