data_[Sm12H6C4O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  H  2.2000  0.2500  0.0000
  C  2.5500  0.7000  0.3000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.2865]
_cell_length_b [10.9082]
_cell_length_c [6.2760]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.4827]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sm6H3C2O]
_chemical_formula_sum '[Sm12 H6 C4 O2]'
_cell_volume [405.7309]
_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  8  0.2436  0.1667  0.2317  1
  Sm  Sm1  4  0.2440  0.5000  0.2312  1
  H  H2  4  0.0000  0.1752  0.5000  1
  H  H3  2  0.0000  0.5000  0.5000  1
  C  C4  4  0.0000  0.3339  0.0000  1
  O  O5  2  0.0000  0.0000  0.0000  1
]