data_[K2Pm4Y6Se12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Pm  1.1300  1.8500  1.1100
  Y  1.2200  1.8000  1.0400
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.3669]
_cell_length_b [4.1320]
_cell_length_c [8.5171]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.2066]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [KPm2(YSe2)3]
_chemical_formula_sum '[K2 Pm4 Y6 Se12]'
_cell_volume [626.6127]
_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
[
  K  K0  2  0.0000  0.5000  0.0000  1
  Pm  Pm1  4  0.1717  0.0000  0.3470  1
  Y  Y2  4  0.1647  0.0000  0.8241  1
  Y  Y3  2  0.0000  0.5000  0.5000  1
  Se  Se4  4  0.0000  0.0000  0.2683  1
  Se  Se5  4  0.1622  0.5000  0.5901  1
  Se  Se6  4  0.1735  0.5000  0.0797  1
]