data_[Ir1Ru1Pt1Rh1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ir  2.2000  1.3500  0.7650
  Ru  2.2000  1.3000  0.6610
  Pt  2.2800  1.3500  0.8050
  Rh  2.2800  1.3500  0.7450
]
_symmetry_space_group_name_H-M [Pmm2]
_cell_length_a [2.7396]
_cell_length_b [3.8614]
_cell_length_c [5.5108]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [IrRuPtRh]
_chemical_formula_sum '[Ir1 Ru1 Pt1 Rh1]'
_cell_volume [58.2977]
_cell_formula_units_Z [1]
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
[
  Ru  Ru0  1  0.0000  0.0000  0.3359  1.0
  Ir  Ir1  1  0.5000  0.5000  0.1021  1.0
  Pt  Pt2  1  0.0000  0.0000  0.8396  1.0
  Rh  Rh3  1  0.5000  0.5000  0.5831  1.0
]