data_[Na8Zn4Ni4As8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Zn  1.6500  1.3500  0.8800
  Ni  1.9100  1.3500  0.7400
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [5.6539]
_cell_length_b [14.2548]
_cell_length_c [5.8012]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Na2ZnNiAs2]
_chemical_formula_sum '[Na8 Zn4 Ni4 As8]'
_cell_volume [467.5481]
_cell_formula_units_Z [4]
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  8  0.2340  0.1761  0.0000  1.0
  Zn  Zn1  4  0.0000  0.0000  0.2500  1.0
  Ni  Ni2  4  0.0000  0.5000  0.2500  1.0
  As  As3  8  0.2223  0.3967  0.0000  1.0
]