data_[Rb2P2Pb2O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  P  2.1900  1.0000  0.5500
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [3.4553]
_cell_length_b [7.8013]
_cell_length_c [8.0285]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [RbPPbO]
_chemical_formula_sum '[Rb2 P2 Pb2 O2]'
_cell_volume [216.4141]
_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  2  0.0000  0.0621  0.5916  1
  P  P1  2  0.5000  0.3132  0.3043  1
  Pb  Pb2  2  0.5000  0.3858  0.9709  1
  O  O3  2  0.0000  0.2310  0.8872  1
]