data_[In12Se18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  In  1.7800  1.5500  0.9400
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [R-3c]
_cell_length_a [7.0194]
_cell_length_b [7.0194]
_cell_length_c [18.8544]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [167]
_chemical_formula_structural [In2Se3]
_chemical_formula_sum '[In12 Se18]'
_cell_volume [804.5261]
_cell_formula_units_Z [6]
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
[
  In  In0  12  0.0000  0.0000  0.1445  1.0
  Se  Se1  18  0.0000  0.2966  0.2500  1.0
]