data_[Er16Zn2Cu4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Zn  1.6500  1.3500  0.8800
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [17.1912]
_cell_length_b [5.0016]
_cell_length_c [6.7091]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.4608]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Er8ZnCu2]
_chemical_formula_sum '[Er16 Zn2 Cu4]'
_cell_volume [550.2892]
_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  0.0329  0.0000  0.7832  1.0
  Er  Er1  4  0.0939  0.5000  0.4634  1.0
  Er  Er2  4  0.1729  0.5000  0.9844  1.0
  Er  Er3  4  0.1981  0.0000  0.3251  1.0
  Zn  Zn4  2  0.0000  0.5000  0.0000  1.0
  Cu  Cu5  4  0.1823  0.0000  0.7169  1.0
]