data_[Y6Er6Cu8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Er  1.2400  1.7500  1.0300
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [3.7657]
_cell_length_b [11.1337]
_cell_length_c [11.0545]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Y3Er3Cu4]
_chemical_formula_sum '[Y6 Er6 Cu8]'
_cell_volume [463.4752]
_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
[
  Y  Y0  4  0.5000  0.1647  0.4994  1
  Y  Y1  2  0.5000  0.0000  0.8357  1
  Er  Er2  4  0.0000  0.2486  0.2490  1
  Er  Er3  2  0.5000  0.0000  0.1647  1
  Cu  Cu4  4  0.0000  0.1217  0.0025  1
  Cu  Cu5  2  0.0000  0.0000  0.3750  1
  Cu  Cu6  2  0.0000  0.0000  0.6228  1
]