data_[Sr4Al4Sb4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Al  1.6100  1.2500  0.6750
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [6.9558]
_cell_length_b [9.2628]
_cell_length_c [7.4317]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.0171]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [SrAlSbO5]
_chemical_formula_sum '[Sr4 Al4 Sb4 O20]'
_cell_volume [433.9060]
_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  0.0000  0.3354  0.2500  1.0
  Al  Al1  4  0.0000  0.3106  0.7500  1.0
  Sb  Sb2  4  0.0000  0.0000  0.0000  1.0
  O  O3  8  0.0963  0.2012  0.6070  1.0
  O  O4  8  0.1961  0.4352  0.9073  1.0
  O  O5  4  0.0000  0.0727  0.2500  1.0
]