data_[K4Pa2H4Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Pa  1.5000  1.8000  1.0400
  H  2.2000  0.2500  0.0000
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [17.4790]
_cell_length_b [3.8447]
_cell_length_c [7.6248]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.9027]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Pa(HSe2)2]
_chemical_formula_sum '[K4 Pa2 H4 Se8]'
_cell_volume [464.7621]
_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  4  0.1435  0.0000  0.6316  1
  Pa  Pa1  2  0.0000  0.0000  0.0000  1
  H  H2  4  0.1761  0.5000  0.1854  1
  Se  Se3  4  0.0054  0.5000  0.7399  1
  Se  Se4  4  0.1807  0.0000  0.1906  1
]