data_[Na2Ni4As2P2]
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
  As  2.1800  1.1500  0.6600
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.2733]
_cell_length_b [3.9044]
_cell_length_c [7.9177]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.3492]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaNi2AsP]
_chemical_formula_sum '[Na2 Ni4 As2 P2]'
_cell_volume [182.9792]
_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  2  0.0723  0.7500  0.7429  1
  Ni  Ni1  2  0.4913  0.2500  0.3780  1
  Ni  Ni2  2  0.4962  0.2500  0.8735  1
  As  As3  2  0.2830  0.2500  0.0687  1
  P  P4  2  0.3262  0.2500  0.5835  1
]