data_[Rb2Cr2P2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Cr  1.6600  1.4000  0.9400
  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 [5.3748]
_cell_length_b [5.7310]
_cell_length_c [7.4290]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.1756]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbCrPO4]
_chemical_formula_sum '[Rb2 Cr2 P2 O8]'
_cell_volume [218.6314]
_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  0.2992  0.2500  0.0683  1
  Cr  Cr1  2  0.2327  0.2500  0.5430  1
  P  P2  2  0.2405  0.7500  0.3477  1
  O  O3  4  0.0557  0.5344  0.3202  1
  O  O4  2  0.4138  0.7500  0.2113  1
  O  O5  2  0.4414  0.7500  0.5484  1
]