data_[Rb4V4Pb4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  V  1.6300  1.3500  0.7775
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.5157]
_cell_length_b [10.1469]
_cell_length_c [7.7189]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.7731]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbVPbO5]
_chemical_formula_sum '[Rb4 V4 Pb4 O20]'
_cell_volume [534.4779]
_cell_formula_units_Z [4]
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  0.3427  0.7500  1.0
  V  V1  4  0.0000  0.3080  0.2500  1.0
  Pb  Pb2  4  0.0000  0.0000  0.0000  1.0
  O  O3  8  0.0896  0.2056  0.1209  1.0
  O  O4  8  0.1859  0.4112  0.4020  1.0
  O  O5  4  0.0000  0.0780  0.7500  1.0
]