data_[K2Cu2Bi2Te6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Cu  1.9000  1.3500  0.8200
  Bi  2.0200  1.6000  1.0350
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [10.1679]
_cell_length_b [4.3646]
_cell_length_c [10.1883]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.3168]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [KCuBiTe3]
_chemical_formula_sum '[K2 Cu2 Bi2 Te6]'
_cell_volume [424.0228]
_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  0.2238  0.2500  0.2017  1.0
  Cu  Cu1  2  0.4277  0.7500  0.9223  1.0
  Bi  Bi2  2  0.1464  0.2500  0.6733  1.0
  Te  Te3  2  0.1607  0.7500  0.8975  1.0
  Te  Te4  2  0.1732  0.7500  0.4611  1.0
  Te  Te5  2  0.4890  0.2500  0.8074  1.0
]