data_[Na1Sr2Ir1C1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Ir  2.2000  1.3500  0.7650
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [5.6346]
_cell_length_b [5.6346]
_cell_length_c [3.9361]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [NaSr2IrC]
_chemical_formula_sum '[Na1 Sr2 Ir1 C1]'
_cell_volume [124.9670]
_cell_formula_units_Z [1]
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
[
  Na  Na0  1  0.5000  0.5000  0.5000  1
  Sr  Sr1  2  0.0000  0.5000  0.0000  1
  Ir  Ir2  1  0.0000  0.0000  0.5000  1
  C  C3  1  0.0000  0.0000  0.0000  1
]