data_[K8Rb4Tl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [11.8191]
_cell_length_b [8.4328]
_cell_length_c [11.2815]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.3921]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [K2RbTl]
_chemical_formula_sum '[K8 Rb4 Tl4]'
_cell_volume [989.1555]
_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
[
  K  K0  4  0.1479  0.2433  0.0705  1.0
  K  K1  4  0.1904  0.7083  0.8488  1.0
  Rb  Rb2  4  0.4933  0.5036  0.3097  1.0
  Tl  Tl3  4  0.4036  0.1337  0.4508  1.0
]