data_[Na6Ho2Er4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ho  1.2300  1.7500  1.0410
  Er  1.2400  1.7500  1.0300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [5.8851]
_cell_length_b [10.1933]
_cell_length_c [5.9119]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.3808]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3HoEr2O6]
_chemical_formula_sum '[Na6 Ho2 Er4 O12]'
_cell_volume [334.5546]
_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
[
  Na  Na0  4  0.0000  0.1672  0.5000  1.0
  Na  Na1  2  0.0000  0.5000  0.5000  1.0
  Ho  Ho2  2  0.0000  0.0000  0.0000  1.0
  Er  Er3  4  0.0000  0.3333  0.0000  1.0
  O  O4  8  0.2372  0.1673  0.2097  1.0
  O  O5  4  0.2353  0.5000  0.2099  1.0
]