data_[Sm4O6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [8.4032]
_cell_length_b [17.3105]
_cell_length_c [17.3105]
_cell_angle_alpha [120.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Sm2O3]
_chemical_formula_sum '[Sm4 O6]'
_cell_volume [2180.6894]
_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  2  0.1287  0.5445  0.4535  1
  Sm  Sm1  2  0.3713  0.5611  0.5889  1
  O  O2  2  0.1287  0.4964  0.5548  1
  O  O3  2  0.2499  0.6531  0.5615  1
  O  O4  2  0.3714  0.4819  0.4364  1
]