data_[Ca6Bi3Pb3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Bi  2.0200  1.6000  1.0350
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.8640]
_cell_length_b [5.8640]
_cell_length_c [15.2500]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Ca2BiPbO6]
_chemical_formula_sum '[Ca6 Bi3 Pb3 O18]'
_cell_volume [454.1440]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.4707  1.0
  Ca  Ca1  3  0.0000  0.0000  0.9706  1.0
  Bi  Bi2  3  0.0000  0.0000  0.1872  1.0
  Pb  Pb3  3  0.0000  0.0000  0.6881  1.0
  O  O4  9  0.0587  0.3595  0.7534  1.0
  O  O5  9  0.0590  0.7002  0.2538  1.0
]