data_[K2Ta2Br4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Ta  1.5000  1.4500  0.8200
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.3828]
_cell_length_b [3.3532]
_cell_length_c [7.1512]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.0535]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [KTaBr2]
_chemical_formula_sum '[K2 Ta2 Br4]'
_cell_volume [197.9265]
_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
[
  K  K0  2  0.0000  0.0000  0.5000  1
  Ta  Ta1  2  0.0000  0.5000  0.0000  1
  Br  Br2  4  0.2355  0.0000  0.1885  1
]