data_[Na4Ni5O10]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [5.1683]
_cell_length_b [6.3567]
_cell_length_c [6.9442]
_cell_angle_alpha [110.1206]
_cell_angle_beta [96.3381]
_cell_angle_gamma [105.9194]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Na4(NiO2)5]
_chemical_formula_sum '[Na4 Ni5 O10]'
_cell_volume [200.6357]
_cell_formula_units_Z [1]
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  2  0.1870  0.3786  0.3764  1.0
  Na  Na1  2  0.4003  0.8080  0.8110  1.0
  Ni  Ni2  2  0.2039  0.9021  0.4023  1.0
  Ni  Ni3  2  0.3986  0.3014  0.7959  1.0
  Ni  Ni4  1  0.0000  0.5000  0.0000  1.0
  O  O5  2  0.1048  0.4082  0.7127  1.0
  O  O6  2  0.1300  0.9911  0.6750  1.0
  O  O7  2  0.3149  0.8182  0.1405  1.0
  O  O8  2  0.3324  0.3863  0.0736  1.0
  O  O9  2  0.4823  0.2246  0.5246  1.0
]