data_[Ca3Tb18Sm36]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Tb  1.1000  1.7500  0.9815
  Sm  1.1700  1.8500  1.2290
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [13.3513]
_cell_length_b [13.3513]
_cell_length_c [12.9027]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Ca(TbSm2)6]
_chemical_formula_sum '[Ca3 Tb18 Sm36]'
_cell_volume [1991.8633]
_cell_formula_units_Z [3]
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
[
  Ca  Ca0  3  0.0000  0.0000  0.0000  1
  Tb  Tb1  18  0.0383  0.5191  0.6174  1
  Sm  Sm2  18  0.0000  0.2609  0.5000  1
  Sm  Sm3  18  0.0911  0.9089  0.2676  1
]