data_UNb2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.8
_cell_length_b   10.8
_cell_length_c   6.47
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   159.75
_symmetry_Int_Tables_number   1
_chemical_formula_structural   UNb2O7
_chemical_formula_sum   'U2 Nb4 O14'
_cell_volume   261.51
_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
  U  U18  1  0.9  0.42  0.86  1.0
  U  U19  1  0.9  0.58  0.62  1.0
  Nb  Nb0  1  0.9  0.49  0.62  1.0
  Nb  Nb1  1  0.9  0.51  0.86  1.0
  Nb  Nb2  1  0.9  0.87  0.62  1.0
  Nb  Nb3  1  0.9  0.13  0.86  1.0
  O  O4  1  0.9  0.74  0.9  1.0
  O  O5  1  0.9  0.26  0.14  1.0
  O  O6  1  0.9  0.26  0.57  1.0
  O  O7  1  0.9  0.74  0.33  1.0
  O  O8  1  0.9  0.3  0.62  1.0
  O  O9  1  0.9  0.7  0.86  1.0
  O  O10  1  0.9  0.54  0.84  1.0
  O  O11  1  0.9  0.46  0.08  1.0
  O  O12  1  0.9  0.46  0.64  1.0
  O  O13  1  0.9  0.54  0.4  1.0
  O  O14  1  0.9  0.25  0.62  1.0
  O  O15  1  0.9  0.75  0.86  1.0
  O  O16  1  0.9  0.02  0.62  1.0
  O  O17  1  0.9  0.98  0.86  1.0

data_UNb2O7
_symmetry_space_group_name_H-M   P-1
_cell_length_a   3.8
_cell_length_b   6.47
_cell_length_c   10.8
_cell_angle_alpha   90.0
_cell_angle_beta   100.12
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   UNb2O7
_chemical_formula_sum   'U2 Nb4 O14'
_cell_volume   261.51
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  U  U0  2  0.42  0.88  0.42  1.0
  Nb  Nb1  2  0.13  0.88  0.13  1.0
  Nb  Nb2  2  0.49  0.12  0.49  1.0
  O  O3  2  0.02  0.12  0.02  1.0
  O  O4  2  0.25  0.12  0.25  1.0
  O  O5  2  0.26  0.17  0.26  1.0
  O  O6  2  0.26  0.6  0.26  1.0
  O  O7  2  0.3  0.12  0.3  1.0
  O  O8  2  0.46  0.1  0.46  1.0
  O  O9  2  0.46  0.66  0.46  1.0

U U Nb Nb Nb Nb O O O O O O O O O O O O O O