data_[Pm12Si2Ge4I6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Si  1.9000  1.1000  0.5400
  Ge  2.0100  1.2500  0.7700
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.4923]
_cell_length_b [12.9759]
_cell_length_c [8.0151]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.1667]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm6SiGe2I3]
_chemical_formula_sum '[Pm12 Si2 Ge4 I6]'
_cell_volume [740.3780]
_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  0.2314  0.1654  0.1982  1
  Pm  Pm1  4  0.2356  0.5000  0.1984  1
  Si  Si2  2  0.0000  0.0000  0.0000  1
  Ge  Ge3  4  0.0000  0.3334  0.0000  1
  I  I4  4  0.0000  0.1673  0.5000  1
  I  I5  2  0.0000  0.5000  0.5000  1
]