data_[Sr8Cr6O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [3.8327]
_cell_length_b [3.8327]
_cell_length_c [27.9046]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Sr4Cr3O10]
_chemical_formula_sum '[Sr8 Cr6 O20]'
_cell_volume [409.9079]
_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
[
  Sr  Sr0  4  0.0000  0.0000  0.0679  1
  Sr  Sr1  4  0.0000  0.0000  0.2028  1
  Cr  Cr2  4  0.0000  0.0000  0.3598  1
  Cr  Cr3  2  0.0000  0.0000  0.5000  1
  O  O4  8  0.0000  0.5000  0.1369  1
  O  O5  4  0.0000  0.0000  0.2902  1
  O  O6  4  0.0000  0.0000  0.4335  1
  O  O7  4  0.0000  0.5000  0.0000  1
]