data_[Ca6Tl8Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Tl  1.6200  1.9000  1.3325
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.3969]
_cell_length_b [5.1064]
_cell_length_c [10.0342]
_cell_angle_alpha [90.0000]
_cell_angle_beta [119.7262]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Ca3(Tl2Pb)2]
_chemical_formula_sum '[Ca6 Tl8 Pb4]'
_cell_volume [551.6114]
_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
[
  Ca  Ca0  4  0.1651  0.5000  0.6718  1.0
  Ca  Ca1  2  0.0000  0.0000  0.0000  1.0
  Tl  Tl2  4  0.0081  0.0000  0.3421  1.0
  Tl  Tl3  4  0.1791  0.5000  0.0124  1.0
  Pb  Pb4  4  0.1556  0.5000  0.3213  1.0
]