data_[Ho2Cu2Ru2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ho  1.2300  1.7500  1.0410
  Cu  1.9000  1.3500  0.8200
  Ru  2.2000  1.3000  0.6610
]
_symmetry_space_group_name_H-M [I4mm]
_cell_length_a [3.3827]
_cell_length_b [3.3827]
_cell_length_c [9.1889]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [107]
_chemical_formula_structural [HoCuRu]
_chemical_formula_sum '[Ho2 Cu2 Ru2]'
_cell_volume [105.1433]
_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  0.0000  0.0000  0.9457  1
  Cu  Cu1  2  0.0000  0.0000  0.6414  1
  Ru  Ru2  2  0.0000  0.0000  0.2630  1
]