data_[Ho2Er6Cu4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ho  1.2300  1.7500  1.0410
  Er  1.2400  1.7500  1.0300
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.8631]
_cell_length_b [8.6249]
_cell_length_c [6.8306]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [HoEr3Cu2]
_chemical_formula_sum '[Ho2 Er6 Cu4]'
_cell_volume [286.5033]
_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
[
  Ho  Ho0  2  0.5000  0.4248  0.5154  1
  Er  Er1  2  0.0000  0.0747  0.4844  1
  Er  Er2  2  0.0000  0.3333  0.8560  1
  Er  Er3  2  0.5000  0.1660  0.1441  1
  Cu  Cu4  2  0.0000  0.3487  0.2598  1
  Cu  Cu5  2  0.5000  0.1503  0.7403  1
]