data_[Sm12Si2C4Cl6]
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
  C  2.5500  0.7000  0.3000
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.0379]
_cell_length_b [3.8578]
_cell_length_c [8.3550]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.8150]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sm6SiC2Cl3]
_chemical_formula_sum '[Sm12 Si2 C4 Cl6]'
_cell_volume [553.5167]
_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
[
  Sm  Sm0  4  0.0240  0.0000  0.2545  1.0
  Sm  Sm1  4  0.1668  0.5000  0.1379  1.0
  Sm  Sm2  4  0.1820  0.5000  0.5555  1.0
  Si  Si3  2  0.0000  0.5000  0.0000  1.0
  C  C4  4  0.1702  0.0000  0.3395  1.0
  Cl  Cl5  4  0.1658  0.0000  0.8303  1.0
  Cl  Cl6  2  0.0000  0.5000  0.5000  1.0
]