data_Nb(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.94
_cell_length_b   6.94
_cell_length_c   6.94
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Nb(SnO2)2
_chemical_formula_sum   'Nb2 Sn4 O8'
_cell_volume   236.71
_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
  Nb  Nb0  1  0.0  0.0  0.0  1.0
  Nb  Nb1  1  0.45  0.45  0.45  1.0
  Sn  Sn10  1  0.68  0.68  0.14  1.0
  Sn  Sn11  1  0.68  0.14  0.68  1.0
  Sn  Sn12  1  0.14  0.68  0.68  1.0
  Sn  Sn13  1  0.14  0.14  0.14  1.0
  O  O2  1  1.0  1.0  0.73  1.0
  O  O3  1  0.54  0.54  0.54  1.0
  O  O4  1  0.54  0.28  0.28  1.0
  O  O5  1  0.28  0.54  0.28  1.0
  O  O6  1  1.0  0.73  1.0  1.0
  O  O7  1  0.73  1.0  1.0  1.0
  O  O8  1  0.73  0.73  0.73  1.0
  O  O9  1  0.28  0.28  0.54  1.0

data_Nb(SnO2)2
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.94
_cell_length_b   6.94
_cell_length_c   17.01
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Nb(SnO2)2
_chemical_formula_sum   'Nb6 Sn12 O24'
_cell_volume   710.13
_cell_formula_units_Z   6
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Nb  Nb0  3  0.0  0.0  0.0  1.0
  Nb  Nb1  3  0.0  0.0  0.55  1.0
  Sn  Sn2  9  0.03  0.52  0.83  1.0
  Sn  Sn3  3  0.0  0.0  0.86  1.0
  O  O4  9  0.09  0.17  0.63  1.0
  O  O5  9  0.17  0.09  0.09  1.0
  O  O6  3  0.0  0.0  0.27  1.0
  O  O7  3  0.0  0.0  0.46  1.0

Nb Nb Sn Sn Sn Sn O O O O O O O O