data_[Cs4Sr2Nb4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Sr  0.9500  2.0000  1.3200
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [5.8059]
_cell_length_b [5.7955]
_cell_length_c [12.5083]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.9946]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Cs2SrNb2O7]
_chemical_formula_sum '[Cs4 Sr2 Nb4 O14]'
_cell_volume [410.1060]
_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
[
  Cs  Cs0  4  0.1905  0.0000  0.3762  1.0
  Sr  Sr1  2  0.0000  0.0000  0.0000  1.0
  Nb  Nb2  4  0.1022  0.5000  0.1724  1.0
  O  O3  8  0.1764  0.2505  0.8427  1.0
  O  O4  4  0.1592  0.5000  0.3265  1.0
  O  O5  2  0.0000  0.5000  0.0000  1.0
]