data_[Nb2Tl2Pb4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nb  1.6000  1.4500  0.8200
  Tl  1.6200  1.9000  1.3325
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [5.8735]
_cell_length_b [5.9936]
_cell_length_c [10.2298]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.8456]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [NbTl(PbO3)2]
_chemical_formula_sum '[Nb2 Tl2 Pb4 O12]'
_cell_volume [295.5535]
_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
[
  Nb  Nb0  2  0.0000  0.0000  0.5000  1.0
  Tl  Tl1  2  0.5000  0.0000  0.0000  1.0
  Pb  Pb2  4  0.2576  0.5352  0.7521  1.0
  O  O3  4  0.1470  0.5269  0.2341  1.0
  O  O4  4  0.2317  0.2225  0.0468  1.0
  O  O5  4  0.3214  0.6883  0.0399  1.0
]