data_[K2Ag2Sn2Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Ag  1.9300  1.6000  1.0867
  Sn  1.9600  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [9.0586]
_cell_length_b [4.1669]
_cell_length_c [9.5098]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.1499]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [KAgSnSe3]
_chemical_formula_sum '[K2 Ag2 Sn2 Se6]'
_cell_volume [344.7946]
_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
[
  K  K0  2  0.2153  0.2500  0.2691  1.0
  Ag  Ag1  2  0.0590  0.2500  0.5959  1.0
  Sn  Sn2  2  0.3257  0.7500  0.8597  1.0
  Se  Se3  2  0.1294  0.2500  0.8877  1.0
  Se  Se4  2  0.2470  0.7500  0.5633  1.0
  Se  Se5  2  0.4590  0.7500  0.1520  1.0
]