data_[Mg8Zr4Ir12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Zr  1.3300  1.5500  0.8600
  Ir  2.2000  1.3500  0.7650
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [4.5333]
_cell_length_b [13.5733]
_cell_length_c [6.2940]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Mg2ZrIr3]
_chemical_formula_sum '[Mg8 Zr4 Ir12]'
_cell_volume [387.2807]
_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
[
  Mg  Mg0  4  0.0000  0.3323  0.5000  1
  Mg  Mg1  2  0.0000  0.0000  0.0000  1
  Mg  Mg2  2  0.0000  0.0000  0.5000  1
  Zr  Zr3  4  0.0000  0.3383  0.0000  1
  Ir  Ir4  8  0.0000  0.1670  0.2540  1
  Ir  Ir5  4  0.0000  0.5000  0.2588  1
]