data_[Na2Bi2Sb2Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Bi  2.0200  1.6000  1.0350
  Sb  2.0500  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [8.6033]
_cell_length_b [4.1441]
_cell_length_c [10.5244]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.0214]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaBiSbSe3]
_chemical_formula_sum '[Na2 Bi2 Sb2 Se6]'
_cell_volume [374.6999]
_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  0.1345  0.7500  0.1481  1
  Bi  Bi1  2  0.3689  0.2500  0.8605  1
  Sb  Sb2  2  0.1166  0.7500  0.5716  1
  Se  Se3  2  0.1222  0.7500  0.8498  1
  Se  Se4  2  0.3203  0.2500  0.5688  1
  Se  Se5  2  0.3876  0.2500  0.1400  1
]