data_[Er4Ti8O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Ti  1.5400  1.4000  0.8517
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.1208]
_cell_length_b [9.7219]
_cell_length_c [10.2072]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [ErTi2O4]
_chemical_formula_sum '[Er4 Ti8 O16]'
_cell_volume [309.6926]
_cell_formula_units_Z [4]
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
[
  Er  Er0  4  0.0000  0.3733  0.2500  1
  Ti  Ti1  8  0.0000  0.1187  0.0602  1
  O  O2  8  0.0000  0.2304  0.6148  1
  O  O3  4  0.0000  0.0405  0.2500  1
  O  O4  4  0.0000  0.5000  0.0000  1
]