data_[Sr4Ir4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ir  2.2000  1.3500  0.7650
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.1048]
_cell_length_b [8.1169]
_cell_length_c [4.7010]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.8096]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [SrIrO5]
_chemical_formula_sum '[Sr4 Ir4 O20]'
_cell_volume [382.8561]
_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
[
  Sr  Sr0  4  0.1945  0.5000  0.4036  1
  Ir  Ir1  4  0.0000  0.1945  0.0000  1
  O  O2  8  0.0760  0.3453  0.7734  1
  O  O3  8  0.1480  0.1791  0.2625  1
  O  O4  4  0.0762  0.0000  0.8092  1
]