data_[K8Mg4Tl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Mg  1.3100  1.5000  0.8600
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [Ama2]
_cell_length_a [6.7046]
_cell_length_b [8.5942]
_cell_length_c [11.3888]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [40]
_chemical_formula_structural [K2MgTl]
_chemical_formula_sum '[K8 Mg4 Tl4]'
_cell_volume [656.2249]
_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  0.2500  0.3536  0.6829  1.0
  K  K1  4  0.2500  0.3554  0.3283  1.0
  Mg  Mg2  4  0.0000  0.0000  0.5023  1.0
  Tl  Tl3  4  0.2500  0.2186  0.0069  1.0
]