data_[Ti2Al2N2O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ti  1.5400  1.4000  0.8517
  Al  1.6100  1.2500  0.6750
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [3.2488]
_cell_length_b [6.2066]
_cell_length_c [4.2161]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [TiAlNO]
_chemical_formula_sum '[Ti2 Al2 N2 O2]'
_cell_volume [85.0125]
_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
[
  Ti  Ti0  2  0.0000  0.1336  0.4401  1
  Al  Al1  2  0.5000  0.3351  0.9641  1
  N  N2  2  0.0000  0.1977  0.9337  1
  O  O3  2  0.5000  0.3736  0.4161  1
]