data_[Cu1Ag1Bi2Se1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cu  1.9000  1.3500  0.8200
  Ag  1.9300  1.6000  1.0867
  Bi  2.0200  1.6000  1.0350
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [5.5600]
_cell_length_b [5.5600]
_cell_length_c [4.9537]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [CuAgBi2Se]
_chemical_formula_sum '[Cu1 Ag1 Bi2 Se1]'
_cell_volume [153.1359]
_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
[
  Cu  Cu0  1  0.5000  0.5000  0.5000  1
  Ag  Ag1  1  0.0000  0.0000  0.0000  1
  Bi  Bi2  2  0.0000  0.5000  0.0000  1
  Se  Se3  1  0.0000  0.0000  0.5000  1
]