data_[K2Ge2Pb2O7]
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
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-3]
_cell_length_a [5.8856]
_cell_length_b [5.8856]
_cell_length_c [8.1086]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [147]
_chemical_formula_structural [K2Ge2Pb2O7]
_chemical_formula_sum '[K2 Ge2 Pb2 O7]'
_cell_volume [243.2544]
_cell_formula_units_Z [1]
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  0.3333  0.6667  0.9204  1.0
  Ge  Ge1  2  0.0000  0.0000  0.2774  1.0
  Pb  Pb2  2  0.3333  0.6667  0.3818  1.0
  O  O3  6  0.1484  0.8201  0.2090  1.0
  O  O4  1  0.0000  0.0000  0.5000  1.0
]