data_[Na4Mg6Tl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mg  1.3100  1.5000  0.8600
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.0952]
_cell_length_b [4.8597]
_cell_length_c [7.6694]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.3344]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2Mg3Tl2]
_chemical_formula_sum '[Na4 Mg6 Tl4]'
_cell_volume [385.1943]
_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  4  0.1451  0.0000  0.7735  1.0
  Mg  Mg1  4  0.1227  0.5000  0.4372  1.0
  Mg  Mg2  2  0.0000  0.5000  0.0000  1.0
  Tl  Tl3  4  0.1451  0.0000  0.2068  1.0
]