data_[Rb2Ba2P2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ba  0.8900  2.1500  1.4900
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.1279]
_cell_length_b [5.7743]
_cell_length_c [8.0830]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.7966]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbBaPO4]
_chemical_formula_sum '[Rb2 Ba2 P2 O8]'
_cell_volume [281.8411]
_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  0.2569  0.7500  0.0313  1.0
  Ba  Ba1  2  0.2345  0.7500  0.5381  1.0
  P  P2  2  0.2239  0.2500  0.3009  1.0
  O  O3  4  0.0719  0.0317  0.2698  1.0
  O  O4  2  0.3329  0.2500  0.4927  1.0
  O  O5  2  0.4089  0.2500  0.1914  1.0
]