data_[Tb16Sm4Tc4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Sm  1.1700  1.8500  1.2290
  Tc  1.9000  1.3500  0.7417
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [8.8818]
_cell_length_b [3.7619]
_cell_length_c [20.6197]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [Tb4SmTc]
_chemical_formula_sum '[Tb16 Sm4 Tc4]'
_cell_volume [688.9473]
_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  0.0086  0.2500  0.9333  1
  Tb  Tb1  4  0.0371  0.2500  0.2073  1
  Tb  Tb2  4  0.1342  0.2500  0.4564  1
  Tb  Tb3  4  0.1492  0.2500  0.6409  1
  Sm  Sm4  4  0.2258  0.7500  0.3123  1
  Tc  Tc5  4  0.2385  0.2500  0.0449  1
]