data_[Na2Ga1Ni1O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ga  1.8100  1.3000  0.7600
  Ni  1.9100  1.3500  0.7400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [5.3439]
_cell_length_b [2.9430]
_cell_length_c [5.6982]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.8424]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Na2GaNiO4]
_chemical_formula_sum '[Na2 Ga1 Ni1 O4]'
_cell_volume [84.2945]
_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  1  0.0000  0.5000  0.5000  1.0
  Na  Na1  1  0.5000  0.0000  0.5000  1.0
  Ga  Ga2  1  0.0000  0.0000  0.0000  1.0
  Ni  Ni3  1  0.5000  0.5000  0.0000  1.0
  O  O4  2  0.2196  0.5000  0.2071  1.0
  O  O5  2  0.2806  0.0000  0.8111  1.0
]