data_[Ca4Hg4Ir4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Hg  2.0000  1.5000  1.2450
  Ir  2.2000  1.3500  0.7650
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.9384]
_cell_length_b [4.4936]
_cell_length_c [5.5274]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.2483]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [CaHgIr]
_chemical_formula_sum '[Ca4 Hg4 Ir4]'
_cell_volume [290.8273]
_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
[
  Ca  Ca0  4  0.1201  0.5000  0.3230  1
  Hg  Hg1  4  0.0871  0.0000  0.7197  1
  Ir  Ir2  4  0.2194  0.5000  0.9084  1
]