data_[Y1Si1I2O1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Si  1.9000  1.1000  0.5400
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [5.8827]
_cell_length_b [5.8827]
_cell_length_c [3.5954]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [YSiI2O]
_chemical_formula_sum '[Y1 Si1 I2 O1]'
_cell_volume [124.4214]
_cell_formula_units_Z [1]
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
[
  Y  Y0  1  0.5000  0.5000  0.5000  1
  Si  Si1  1  0.0000  0.0000  0.0000  1
  I  I2  2  0.0000  0.5000  0.0000  1
  O  O3  1  0.0000  0.0000  0.5000  1
]