data_[Rb2Ni2P2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ni  1.9100  1.3500  0.7400
  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 [4.8755]
_cell_length_b [5.6679]
_cell_length_c [7.8138]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.3946]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbNiPO4]
_chemical_formula_sum '[Rb2 Ni2 P2 O8]'
_cell_volume [208.1770]
_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  0.2874  0.2500  0.8834  1.0
  Ni  Ni1  2  0.3630  0.7500  0.4883  1.0
  P  P2  2  0.1215  0.2500  0.3037  1.0
  O  O3  4  0.3360  0.0326  0.3212  1.0
  O  O4  2  0.0139  0.2500  0.4722  1.0
  O  O5  2  0.1065  0.7500  0.8712  1.0
]