data_[Na2Ga2Sn2Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ga  1.8100  1.3000  0.7600
  Sn  1.9600  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [8.7884]
_cell_length_b [4.1012]
_cell_length_c [10.5486]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.7368]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaGaSnSe3]
_chemical_formula_sum '[Na2 Ga2 Sn2 Se6]'
_cell_volume [377.5741]
_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  0.1379  0.2500  0.1352  1.0
  Ga  Ga1  2  0.0781  0.2500  0.6138  1.0
  Sn  Sn2  2  0.3857  0.7500  0.8511  1.0
  Se  Se3  2  0.1055  0.2500  0.8374  1.0
  Se  Se4  2  0.1839  0.7500  0.5094  1.0
  Se  Se5  2  0.3754  0.7500  0.1076  1.0
]