data_[La1Si2Se1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Si  1.9000  1.1000  0.5400
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P4mm]
_cell_length_a [3.8412]
_cell_length_b [3.8412]
_cell_length_c [6.0002]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [99]
_chemical_formula_structural [LaSi2Se]
_chemical_formula_sum '[La1 Si2 Se1]'
_cell_volume [88.5326]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.5236  1
  Si  Si1  1  0.0000  0.0000  0.0488  1
  Si  Si2  1  0.5000  0.5000  0.1731  1
  Se  Se3  1  0.5000  0.5000  0.7545  1
]