data_[Y4As1Pb1Se2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  As  2.1800  1.1500  0.6600
  Pb  2.3300  1.8000  1.1225
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [7.2655]
_cell_length_b [4.1987]
_cell_length_c [7.3089]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.4790]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Y4AsPbSe2]
_chemical_formula_sum '[Y4 As1 Pb1 Se2]'
_cell_volume [210.2010]
_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
[
  Y  Y0  2  0.2432  0.5000  0.2390  1.0
  Y  Y1  2  0.2527  0.0000  0.7605  1.0
  As  As2  1  0.0000  0.0000  0.0000  1.0
  Pb  Pb3  1  0.0000  0.5000  0.5000  1.0
  Se  Se4  1  0.5000  0.0000  0.5000  1.0
  Se  Se5  1  0.5000  0.5000  0.0000  1.0
]