data_[Na1Zn1Fe1Sn2]
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
  Fe  1.8300  1.4000  0.8525
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [4.9115]
_cell_length_b [4.9115]
_cell_length_c [4.8461]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [NaZnFeSn2]
_chemical_formula_sum '[Na1 Zn1 Fe1 Sn2]'
_cell_volume [116.9027]
_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  0.5000  0.5000  0.5000  1
  Zn  Zn1  1  0.0000  0.0000  0.5000  1
  Fe  Fe2  1  0.0000  0.0000  0.0000  1
  Sn  Sn3  2  0.0000  0.5000  0.0000  1
]