data_[K2Tb2Ge2Te6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Tb  1.1000  1.7500  0.9815
  Ge  2.0100  1.2500  0.7700
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [9.2200]
_cell_length_b [4.3040]
_cell_length_c [11.7274]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.3935]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [KTbGeTe3]
_chemical_formula_sum '[K2 Tb2 Ge2 Te6]'
_cell_volume [438.9707]
_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  0.2329  0.2500  0.2809  1.0
  Tb  Tb1  2  0.3639  0.7500  0.8403  1.0
  Ge  Ge2  2  0.1185  0.2500  0.5528  1.0
  Te  Te3  2  0.1044  0.2500  0.7794  1.0
  Te  Te4  2  0.3293  0.7500  0.5656  1.0
  Te  Te5  2  0.3847  0.7500  0.1078  1.0
]