data_[K4Hf2Ge4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Hf  1.3000  1.5500  0.8500
  Ge  2.0100  1.2500  0.7700
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.9772]
_cell_length_b [5.8425]
_cell_length_c [6.8554]
_cell_angle_alpha [90.0000]
_cell_angle_beta [121.2571]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Hf(GeO3)2]
_chemical_formula_sum '[K4 Hf2 Ge4 O12]'
_cell_volume [341.6061]
_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  0.2110  0.5000  0.1852  1.0
  Hf  Hf1  2  0.0000  0.5000  0.5000  1.0
  Ge  Ge2  4  0.0512  0.0000  0.2051  1.0
  O  O3  8  0.0243  0.2499  0.7356  1.0
  O  O4  4  0.2407  0.5000  0.6372  1.0
]