data_[Mn4Nb8Ir20Os4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mn  1.5500  1.4000  0.6483
  Nb  1.6000  1.4500  0.8200
  Ir  2.2000  1.3500  0.7650
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [I4/mcm]
_cell_length_a [7.5655]
_cell_length_b [7.5655]
_cell_length_c [10.8715]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [140]
_chemical_formula_structural [MnNb2Ir5Os]
_chemical_formula_sum '[Mn4 Nb8 Ir20 Os4]'
_cell_volume [622.2540]
_cell_formula_units_Z [4]
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
[
  Mn  Mn0  4  0.0000  0.0000  0.2500  1
  Nb  Nb1  8  0.1160  0.6160  0.5000  1
  Ir  Ir2  16  0.1906  0.3094  0.3727  1
  Ir  Ir3  4  0.0000  0.0000  0.0000  1
  Os  Os4  4  0.0000  0.5000  0.2500  1
]