data_[Tb6Gd2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Gd  1.2000  1.8000  1.0750
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [3.6265]
_cell_length_b [11.4313]
_cell_length_c [6.2861]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Tb3Gd]
_chemical_formula_sum '[Tb6 Gd2]'
_cell_volume [260.5945]
_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
[
  Tb  Tb0  4  0.0000  0.2480  0.6664  1
  Tb  Tb1  2  0.0000  0.5000  0.9996  1
  Gd  Gd2  2  0.0000  0.0000  0.0009  1
]