data_[Na4Cd4Ag4Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cd  1.6900  1.5500  1.0900
  Ag  1.9300  1.6000  1.0867
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.7445]
_cell_length_b [4.3010]
_cell_length_c [8.7904]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.5351]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaCdAgSe2]
_chemical_formula_sum '[Na4 Cd4 Ag4 Se8]'
_cell_volume [551.2786]
_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
[
  Na  Na0  4  0.1920  0.5000  0.6719  1.0
  Cd  Cd1  4  0.0641  0.0000  0.1928  1.0
  Ag  Ag2  4  0.1800  0.5000  0.0414  1.0
  Se  Se3  4  0.1181  0.0000  0.8702  1.0
  Se  Se4  4  0.1462  0.5000  0.3365  1.0
]