data_[Tb4Dy4Nb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Dy  1.2200  1.7500  1.1310
  Nb  1.6000  1.4500  0.8200
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.4607]
_cell_length_b [27.3864]
_cell_length_c [3.4780]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [TbDyNb]
_chemical_formula_sum '[Tb4 Dy4 Nb4]'
_cell_volume [329.6279]
_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
[
  Tb  Tb0  4  0.0000  0.1507  0.7500  1
  Dy  Dy1  4  0.0000  0.4452  0.7500  1
  Nb  Nb2  4  0.0000  0.2735  0.7500  1
]