data_[Rb2Cr2P4O16]
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 [C2/m]
_cell_length_a [7.9046]
_cell_length_b [5.1566]
_cell_length_c [7.9392]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.2518]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [RbCr(PO4)2]
_chemical_formula_sum '[Rb2 Cr2 P4 O16]'
_cell_volume [321.6835]
_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  0.0000  0.5000  1
  Cr  Cr1  2  0.0000  0.0000  0.0000  1
  P  P2  4  0.1229  0.5000  0.8068  1
  O  O3  8  0.0083  0.2587  0.8271  1
  O  O4  4  0.1832  0.5000  0.6338  1
  O  O5  4  0.2388  0.0000  0.0376  1
]