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# generated using pymatgen
data_Sr2Nb2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.99200204
_cell_length_b   27.00236966
_cell_length_c   5.76557783
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2Nb2O7
_chemical_formula_sum   'Sr8 Nb8 O28'
_cell_volume   621.49189896
_cell_formula_units_Z   4
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  Sr2+  2.0
  Nb5+  5.0
  O2-  -2.0
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
  Sr2+  Sr0  1  0.00000000  0.70772061  0.03833928  1
  Sr2+  Sr1  1  0.50000000  0.79227939  0.53833928  1
  Sr2+  Sr2  1  0.00000000  0.55137081  0.47086721  1
  Sr2+  Sr3  1  0.50000000  0.94862919  0.97086721  1
  Sr2+  Sr4  1  0.50000000  0.20772061  0.03833928  1
  Sr2+  Sr5  1  0.00000000  0.29227939  0.53833928  1
  Sr2+  Sr6  1  0.50000000  0.05137081  0.47086721  1
  Sr2+  Sr7  1  0.00000000  0.44862919  0.97086721  1
  Nb5+  Nb8  1  0.50000000  0.66181026  0.50263112  1
  Nb5+  Nb9  1  0.00000000  0.83818974  0.00263112  1
  Nb5+  Nb10  1  0.00000000  0.94176530  0.47114390  1
  Nb5+  Nb11  1  0.50000000  0.55823470  0.97114390  1
  Nb5+  Nb12  1  0.00000000  0.16181026  0.50263112  1
  Nb5+  Nb13  1  0.50000000  0.33818974  0.00263112  1
  Nb5+  Nb14  1  0.50000000  0.44176530  0.47114390  1
  Nb5+  Nb15  1  0.00000000  0.05823470  0.97114390  1
  O2-  O16  1  0.00000000  0.54833909  0.94334317  1
  O2-  O17  1  0.50000000  0.95166091  0.44334317  1
  O2-  O18  1  0.50000000  0.59209506  0.66335283  1
  O2-  O19  1  0.00000000  0.90790494  0.16335283  1
  O2-  O20  1  0.50000000  0.69985365  0.76774056  1
  O2-  O21  1  0.00000000  0.80014635  0.26774056  1
  O2-  O22  1  0.00000000  0.78468047  0.79081469  1
  O2-  O23  1  0.50000000  0.71531953  0.29081469  1
  O2-  O24  1  0.50000000  0.50824732  0.22279418  1
  O2-  O25  1  0.00000000  0.99175268  0.72279418  1
  O2-  O26  1  0.50000000  0.61163011  0.17256826  1
  O2-  O27  1  0.00000000  0.88836989  0.67256826  1
  O2-  O28  1  0.00000000  0.65064773  0.46652480  1
  O2-  O29  1  0.50000000  0.84935227  0.96652480  1
  O2-  O30  1  0.50000000  0.04833909  0.94334317  1
  O2-  O31  1  0.00000000  0.45166091  0.44334317  1
  O2-  O32  1  0.00000000  0.09209506  0.66335283  1
  O2-  O33  1  0.50000000  0.40790494  0.16335283  1
  O2-  O34  1  0.00000000  0.19985365  0.76774056  1
  O2-  O35  1  0.50000000  0.30014635  0.26774056  1
  O2-  O36  1  0.50000000  0.28468047  0.79081469  1
  O2-  O37  1  0.00000000  0.21531953  0.29081469  1
  O2-  O38  1  0.00000000  0.00824732  0.22279418  1
  O2-  O39  1  0.50000000  0.49175268  0.72279418  1
  O2-  O40  1  0.00000000  0.11163011  0.17256826  1
  O2-  O41  1  0.50000000  0.38836989  0.67256826  1
  O2-  O42  1  0.50000000  0.15064773  0.46652480  1
  O2-  O43  1  0.00000000  0.34935227  0.96652480  1
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