data_[Na4Ni4Sb2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ni  1.9100  1.3500  0.7400
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [5.3523]
_cell_length_b [8.9983]
_cell_length_c [5.8946]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.0909]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2Ni2SbO6]
_chemical_formula_sum '[Na4 Ni4 Sb2 O12]'
_cell_volume [266.6209]
_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
[
  Na  Na0  4  0.0000  0.1760  0.0000  1.0
  Ni  Ni1  4  0.0000  0.3343  0.5000  1.0
  Sb  Sb2  2  0.0000  0.0000  0.5000  1.0
  O  O3  8  0.2230  0.1666  0.6968  1.0
  O  O4  4  0.2467  0.5000  0.6887  1.0
]