data_[K2Tb2Cu2S6]
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
  Cu  1.9000  1.3500  0.8200
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [8.7258]
_cell_length_b [3.9670]
_cell_length_c [9.3005]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.7048]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [KTbCuS3]
_chemical_formula_sum '[K2 Tb2 Cu2 S6]'
_cell_volume [308.3564]
_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  0.1972  0.2500  0.2304  1.0
  Tb  Tb1  2  0.3300  0.7500  0.8548  1.0
  Cu  Cu2  2  0.0849  0.2500  0.6049  1.0
  S  S3  2  0.1139  0.2500  0.8577  1.0
  S  S4  2  0.1820  0.7500  0.5372  1.0
  S  S5  2  0.4567  0.7500  0.1592  1.0
]