data_[Mg2H4Ir4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  H  2.2000  0.2500  0.0000
  Ir  2.2000  1.3500  0.7650
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [2.8372]
_cell_length_b [8.8186]
_cell_length_c [4.7521]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Mg(HIr)2]
_chemical_formula_sum '[Mg2 H4 Ir4]'
_cell_volume [118.8993]
_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
[
  Mg  Mg0  2  0.0000  0.0000  0.0999  1
  Ir  Ir1  4  0.0000  0.2478  0.4748  1
  H  H2  4  0.0000  0.3535  0.1546  1
]