data_[Y8Se4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  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 [13.8641]
_cell_length_b [3.7653]
_cell_length_c [6.6547]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.0607]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Y2Se]
_chemical_formula_sum '[Y8 Se4]'
_cell_volume [324.1806]
_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
[
  Y  Y0  4  0.0145  0.5000  0.7650  1.0
  Y  Y1  4  0.2057  0.0000  0.2004  1.0
  Se  Se2  4  0.1297  0.0000  0.5588  1.0
]