data_[Sm2Ga4I2O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Ga  1.8100  1.3000  0.7600
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.1577]
_cell_length_b [6.3100]
_cell_length_c [6.8155]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.2159]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [SmGa2IO8]
_chemical_formula_sum '[Sm2 Ga4 I2 O16]'
_cell_volume [303.8492]
_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  0.0000  0.0000  0.5000  1
  Ga  Ga1  4  0.0516  0.5000  0.7212  1
  I  I2  2  0.0000  0.0000  0.0000  1
  O  O3  8  0.0100  0.2048  0.2128  1
  O  O4  4  0.1737  0.5000  0.4905  1
  O  O5  4  0.2357  0.5000  0.9667  1
]