data_[Er8Cu2O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Cu  1.9000  1.3500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.4091]
_cell_length_b [3.8574]
_cell_length_c [8.9303]
_cell_angle_alpha [90.0000]
_cell_angle_beta [133.6015]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Er4CuO7]
_chemical_formula_sum '[Er8 Cu2 O14]'
_cell_volume [309.5541]
_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
[
  Er  Er0  4  0.0884  0.5000  0.4010  1.0
  Er  Er1  4  0.2471  0.5000  0.1565  1.0
  Cu  Cu2  2  0.0000  0.0000  0.0000  1.0
  O  O3  4  0.0919  0.0000  0.8917  1.0
  O  O4  4  0.1342  0.5000  0.6959  1.0
  O  O5  4  0.2047  0.0000  0.5570  1.0
  O  O6  2  0.0000  0.5000  0.0000  1.0
]