data_[La4Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [8.6381]
_cell_length_b [4.2801]
_cell_length_c [8.5628]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.2112]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [LaSe2]
_chemical_formula_sum '[La4 Se8]'
_cell_volume [316.5774]
_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
[
  La  La0  4  0.2765  0.2202  0.1278  1.0
  Se  Se1  4  0.0024  0.6776  0.1172  1.0
  Se  Se2  4  0.3655  0.7414  0.3749  1.0
]