data_[K4Ge2Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Ge  2.0100  1.2500  0.7700
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [5.2567]
_cell_length_b [5.2567]
_cell_length_c [15.9760]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [K2GeCl4]
_chemical_formula_sum '[K4 Ge2 Cl8]'
_cell_volume [441.4670]
_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  0.0000  0.3598  1.0
  Ge  Ge1  2  0.0000  0.0000  0.0000  1.0
  Cl  Cl2  4  0.0000  0.0000  0.1665  1.0
  Cl  Cl3  4  0.0000  0.5000  0.0000  1.0
]