data_[K6Ag2Sn8]
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
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [6.8010]
_cell_length_b [12.8681]
_cell_length_c [6.7060]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [K3AgSn4]
_chemical_formula_sum '[K6 Ag2 Sn8]'
_cell_volume [586.8821]
_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  4  0.0000  0.2482  0.1762  1
  K  K1  2  0.0000  0.0000  0.5493  1
  Ag  Ag2  2  0.0000  0.5000  0.3162  1
  Sn  Sn3  4  0.0000  0.3789  0.6760  1
  Sn  Sn4  4  0.2407  0.5000  0.9631  1
]