data_[K2Fe4Ag2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Fe  1.8300  1.4000  0.8525
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.6555]
_cell_length_b [2.8864]
_cell_length_c [6.5444]
_cell_angle_alpha [90.0000]
_cell_angle_beta [95.4050]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [KFe2Ag]
_chemical_formula_sum '[K2 Fe4 Ag2]'
_cell_volume [181.5778]
_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  0.0000  0.0000  0.5000  1
  Fe  Fe1  4  0.2327  0.0000  0.1290  1
  Ag  Ag2  2  0.0000  0.5000  0.0000  1
]