data_[Sn12Te2As4Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sn  1.9600  1.4500  0.8300
  Te  2.1000  1.4000  1.2933
  As  2.1800  1.1500  0.6600
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.6498]
_cell_length_b [4.2206]
_cell_length_c [8.5119]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.8022]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sn6TeAs2Se3]
_chemical_formula_sum '[Sn12 Te2 As4 Se6]'
_cell_volume [653.3477]
_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
[
  Sn  Sn0  4  0.0051  0.0000  0.2666  1.0
  Sn  Sn1  4  0.1738  0.5000  0.0924  1.0
  Sn  Sn2  4  0.1742  0.5000  0.5707  1.0
  Te  Te3  2  0.0000  0.5000  0.0000  1.0
  As  As4  4  0.1663  0.0000  0.3327  1.0
  Se  Se5  4  0.1656  0.0000  0.8348  1.0
  Se  Se6  2  0.0000  0.5000  0.5000  1.0
]