data_[Yb6Er3Sb3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Yb  1.1000  1.7500  1.0840
  Er  1.2400  1.7500  1.0300
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [5.7656]
_cell_length_b [5.7656]
_cell_length_c [14.0079]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Yb2ErSbO6]
_chemical_formula_sum '[Yb6 Er3 Sb3 O18]'
_cell_volume [403.2687]
_cell_formula_units_Z [3]
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
[
  Yb  Yb0  6  0.0000  0.0000  0.2748  1.0
  Er  Er1  3  0.0000  0.0000  0.0000  1.0
  Sb  Sb2  3  -0.0000  0.0000  0.5000  1.0
  O  O3  18  0.0328  0.6197  0.2527  1.0
]