data_[Rb4Ti2Pb2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ti  1.5400  1.4000  0.8517
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [6.1961]
_cell_length_b [8.1552]
_cell_length_c [6.5913]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [Rb2TiPbO4]
_chemical_formula_sum '[Rb4 Ti2 Pb2 O8]'
_cell_volume [333.0620]
_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  0.0000  0.2391  0.2380  1
  Ti  Ti1  2  0.0000  0.5000  0.6593  1
  Pb  Pb2  2  0.0000  0.0000  0.7412  1
  O  O3  4  0.0000  0.3134  0.8094  1
  O  O4  4  0.2436  0.5000  0.4928  1
]