data_[Ce2Er2Ni2Ir2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Er  1.2400  1.7500  1.0300
  Ni  1.9100  1.3500  0.7400
  Ir  2.2000  1.3500  0.7650
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.4297]
_cell_length_b [3.6835]
_cell_length_c [10.0918]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [CeErNiIr]
_chemical_formula_sum '[Ce2 Er2 Ni2 Ir2]'
_cell_volume [164.6641]
_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
[
  Ce  Ce0  2  0.5000  0.0000  0.8601  1.0
  Er  Er1  2  0.0000  0.0000  0.1382  1.0
  Ni  Ni2  2  0.0000  0.0000  0.4181  1.0
  Ir  Ir3  2  0.5000  0.0000  0.5837  1.0
]