data_[Na2Tl2Ag2Br8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tl  1.6200  1.9000  1.3325
  Ag  1.9300  1.6000  1.0867
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.8251]
_cell_length_b [6.1922]
_cell_length_c [9.6105]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.7234]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaTlAgBr4]
_chemical_formula_sum '[Na2 Tl2 Ag2 Br8]'
_cell_volume [448.2512]
_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
[
  Na  Na0  2  0.2940  0.7500  0.5868  1.0
  Tl  Tl1  2  0.2762  0.7500  0.0601  1.0
  Ag  Ag2  2  0.2569  0.2500  0.3335  1.0
  Br  Br3  4  0.0262  0.0123  0.7231  1.0
  Br  Br4  2  0.4291  0.2500  0.1246  1.0
  Br  Br5  2  0.4578  0.2500  0.6055  1.0
]