data_[Rb4Na8Tl2Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  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 [15.4176]
_cell_length_b [8.2403]
_cell_length_c [5.7903]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.8535]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Na4TlPb2]
_chemical_formula_sum '[Rb4 Na8 Tl2 Pb4]'
_cell_volume [707.6443]
_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
[
  Rb  Rb0  4  0.1302  0.5000  0.6697  1
  Na  Na1  8  0.1380  0.2008  0.1708  1
  Tl  Tl2  2  0.0000  0.0000  0.5000  1
  Pb  Pb3  4  0.1965  0.0000  0.7205  1
]