data_[Na2Zn2Sn8]
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
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [5.9224]
_cell_length_b [6.3331]
_cell_length_c [9.3591]
_cell_angle_alpha [76.0290]
_cell_angle_beta [86.6382]
_cell_angle_gamma [66.3979]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [NaZnSn4]
_chemical_formula_sum '[Na2 Zn2 Sn8]'
_cell_volume [311.8688]
_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  0.2819  0.9869  0.2648  1.0
  Zn  Zn1  2  0.1645  0.5418  0.2347  1.0
  Sn  Sn2  2  0.1739  0.2227  0.5531  1.0
  Sn  Sn3  2  0.2196  0.9574  0.9000  1.0
  Sn  Sn4  2  0.2739  0.4149  0.9481  1.0
  Sn  Sn5  2  0.3481  0.6413  0.6190  1.0
]