data_[Rb2Zn2Ni2O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Zn  1.6500  1.3500  0.8800
  Ni  1.9100  1.3500  0.7400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2/c]
_cell_length_a [6.4497]
_cell_length_b [3.9132]
_cell_length_c [6.5086]
_cell_angle_alpha [90.0000]
_cell_angle_beta [97.6987]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [RbZnNiO2]
_chemical_formula_sum '[Rb2 Zn2 Ni2 O4]'
_cell_volume [162.7903]
_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  0.5000  0.2013  0.2500  1
  Zn  Zn1  2  0.0000  0.0000  0.0000  1
  Ni  Ni2  2  0.0000  0.4953  0.7500  1
  O  O3  4  0.1979  0.3546  0.5287  1
]