data_[Rb2V2Ni2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  V  1.6300  1.3500  0.7775
  Ni  1.9100  1.3500  0.7400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.0330]
_cell_length_b [5.8349]
_cell_length_c [8.2578]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.7630]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbVNiO4]
_chemical_formula_sum '[Rb2 V2 Ni2 O8]'
_cell_volume [233.3866]
_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  0.3004  0.2500  0.8617  1.0
  V  V1  2  0.1146  0.2500  0.2897  1.0
  Ni  Ni2  2  0.3899  0.7500  0.4899  1.0
  O  O3  4  0.3507  0.0128  0.3284  1.0
  O  O4  2  0.0490  0.7500  0.5539  1.0
  O  O5  2  0.1136  0.7500  0.9034  1.0
]