data_[Tb2Gd2C4I4]
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
  C  2.5500  0.7000  0.3000
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [7.3601]
_cell_length_b [3.9432]
_cell_length_c [11.3268]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.2493]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [TbGd(CI)2]
_chemical_formula_sum '[Tb2 Gd2 C4 I4]'
_cell_volume [328.2028]
_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  2  0.1461  0.0000  0.6227  1
  Gd  Gd1  2  0.3543  0.5000  0.3771  1
  C  C2  2  0.0772  0.5000  0.4730  1
  C  C3  2  0.4225  0.0000  0.5276  1
  I  I4  2  0.1762  0.0000  0.1907  1
  I  I5  2  0.3237  0.5000  0.8090  1
]