data_[Na2Si1Te1Se4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Si  1.9000  1.1000  0.5400
  Te  2.1000  1.4000  1.2933
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P1]
_cell_length_a [6.0341]
_cell_length_b [6.5588]
_cell_length_c [6.8243]
_cell_angle_alpha [109.4469]
_cell_angle_beta [101.1670]
_cell_angle_gamma [105.4601]
_symmetry_Int_Tables_number [1]
_chemical_formula_structural [Na2SiTeSe4]
_chemical_formula_sum '[Na2 Si1 Te1 Se4]'
_cell_volume [233.3025]
_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  0.0815  0.9046  0.5232  1.0
  Na  Na1  1  0.6237  0.4781  0.6901  1.0
  Si  Si2  1  0.2643  0.5378  0.2280  1.0
  Te  Te3  1  0.5549  0.0793  0.2046  1.0
  Se  Se4  1  0.0476  0.3865  0.4217  1.0
  Se  Se5  1  0.0824  0.7282  0.0636  1.0
  Se  Se6  1  0.3750  0.2847  0.9687  1.0
  Se  Se7  1  0.5835  0.8268  0.5131  1.0
]