data_[Sr16Nb4Al4O32]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Nb  1.6000  1.4500  0.8200
  Al  1.6100  1.2500  0.6750
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [7.1744]
_cell_length_b [5.8163]
_cell_length_c [19.7164]
_cell_angle_alpha [90.0000]
_cell_angle_beta [97.5727]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Sr4NbAlO8]
_chemical_formula_sum '[Sr16 Nb4 Al4 O32]'
_cell_volume [815.5612]
_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  0.0263  0.2497  0.9050  1
  Sr  Sr1  4  0.1394  0.2194  0.7088  1
  Sr  Sr2  4  0.2912  0.7211  0.9536  1
  Sr  Sr3  4  0.4977  0.7483  0.1351  1
  Nb  Nb4  4  0.3366  0.7420  0.7890  1
  Al  Al5  4  0.2677  0.2157  0.0565  1
  O  O6  4  0.0580  0.1625  0.5771  1
  O  O7  4  0.1746  0.7224  0.2042  1
  O  O8  4  0.2002  0.0125  0.3219  1
  O  O9  4  0.2087  0.5301  0.3396  1
  O  O10  4  0.2483  0.5866  0.5564  1
  O  O11  4  0.3423  0.1998  0.4775  1
  O  O12  4  0.4497  0.2068  0.6249  1
  O  O13  4  0.4990  0.0096  0.7564  1
]