data_[K8Tb4]
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
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [3.8820]
_cell_length_b [21.3047]
_cell_length_c [7.3272]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [K2Tb]
_chemical_formula_sum '[K8 Tb4]'
_cell_volume [605.9879]
_cell_formula_units_Z [4]
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  0.0000  0.1718  0.5000  1
  K  K1  2  0.0000  0.0000  0.0000  1
  K  K2  2  0.0000  0.5000  0.5000  1
  Tb  Tb3  4  0.0000  0.3147  0.0000  1
]