data_[Er18Tm6O36]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [9.5404]
_cell_length_b [9.5404]
_cell_length_c [11.2079]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Er3TmO6]
_chemical_formula_sum '[Er18 Tm6 O36]'
_cell_volume [883.4690]
_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
[
  Er  Er0  18  0.0393  0.2657  0.7091  1.0
  Tm  Tm1  3  0.0000  0.0000  0.0000  1.0
  Tm  Tm2  3  0.0000  0.0000  0.5000  1.0
  O  O3  18  0.0260  0.2174  0.9026  1.0
  O  O4  18  0.0280  0.1877  0.3712  1.0
]