data_[Na2Er4Ru2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Er  1.2400  1.7500  1.0300
  Ru  2.2000  1.3000  0.6610
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [5.3201]
_cell_length_b [5.7448]
_cell_length_c [9.2983]
_cell_angle_alpha [90.0000]
_cell_angle_beta [123.1036]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [NaEr2RuO6]
_chemical_formula_sum '[Na2 Er4 Ru2 O12]'
_cell_volume [238.0526]
_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  2  0.5000  0.0000  0.5000  1
  Er  Er1  4  0.2860  0.0751  0.7586  1
  Ru  Ru2  2  0.0000  0.0000  0.0000  1
  O  O3  4  0.0836  0.0716  0.2299  1
  O  O4  4  0.2494  0.7144  0.0871  1
  O  O5  4  0.3583  0.1742  0.0571  1
]