data_[Sm16Si4Sb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Si  1.9000  1.1000  0.5400
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [16.1273]
_cell_length_b [6.0877]
_cell_length_c [7.6696]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.4689]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Sm4SiSb]
_chemical_formula_sum '[Sm16 Si4 Sb4]'
_cell_volume [725.7106]
_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
[
  Sm  Sm0  8  0.0794  0.3906  0.4505  1
  Sm  Sm1  8  0.1662  0.1066  0.1380  1
  Si  Si2  4  0.2500  0.2500  0.5000  1
  Sb  Sb3  4  0.0000  0.1285  0.7500  1
]