data_[Na6Zn4Sn2O12]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [5.4435]
_cell_length_b [9.4344]
_cell_length_c [5.7572]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.2913]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3Zn2SnO6]
_chemical_formula_sum '[Na6 Zn4 Sn2 O12]'
_cell_volume [280.7264]
_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  4  0.0000  0.1728  0.5000  1
  Na  Na1  2  0.0000  0.5000  0.5000  1
  Zn  Zn2  4  0.0000  0.3336  0.0000  1
  Sn  Sn3  2  0.0000  0.0000  0.0000  1
  O  O4  8  0.2326  0.8367  0.2077  1
  O  O5  4  0.2428  0.5000  0.2084  1
]