data_[Ag4Sn2Sb2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ag  1.9300  1.6000  1.0867
  Sn  1.9600  1.4500  0.8300
  Sb  2.0500  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [10.5044]
_cell_length_b [6.6716]
_cell_length_c [6.4526]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [Ag2SnSbSe4]
_chemical_formula_sum '[Ag4 Sn2 Sb2 Se8]'
_cell_volume [452.2016]
_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
[
  Ag  Ag0  4  0.2470  0.1859  0.5098  1.0
  Sn  Sn1  2  0.0000  0.3066  0.0340  1.0
  Sb  Sb2  2  0.0000  0.7154  0.5330  1.0
  Se  Se3  4  0.2470  0.2127  0.0929  1.0
  Se  Se4  2  0.0000  0.3260  0.6074  1.0
  Se  Se5  2  0.0000  0.7058  0.1202  1.0
]