data_[Si4Ag8Sn4Te16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  Ag  1.9300  1.6000  1.0867
  Sn  1.9600  1.4500  0.8300
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [Fmm2]
_cell_length_a [8.6643]
_cell_length_b [10.1744]
_cell_length_c [11.9869]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [42]
_chemical_formula_structural [SiAg2SnTe4]
_chemical_formula_sum '[Si4 Ag8 Sn4 Te16]'
_cell_volume [1056.6957]
_cell_formula_units_Z [4]
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
[
  Si  Si0  4  0.0000  0.0000  0.4982  1.0
  Ag  Ag1  8  0.2500  0.2500  0.2579  1.0
  Sn  Sn2  4  0.0000  0.0000  0.0350  1.0
  Te  Te3  8  0.0000  0.2103  0.6097  1.0
  Te  Te4  8  0.2363  0.0000  0.3659  1.0
]