data_[Y2Bi4Se4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Bi  2.0200  1.6000  1.0350
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [7.7266]
_cell_length_b [7.7266]
_cell_length_c [4.7335]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Y(BiSe)2]
_chemical_formula_sum '[Y2 Bi4 Se4]'
_cell_volume [282.5912]
_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
[
  Y  Y0  2  0.0000  0.0000  0.0000  1
  Bi  Bi1  4  0.1583  0.6583  0.5000  1
  Se  Se2  4  0.1762  0.3238  0.0000  1
]