The compound described by LiNb8O10 crystallizes in the tetragonal I4_1/amd space group. Li(1) is bonded to four equivalent O(2) atoms to form LiO4 tetrahedra that share corners with eight equivalent Nb(1)O5 square pyramids. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(2) and three equivalent O(1) atoms to form NbO5 square pyramids that share corners with two equivalent Li(1)O4 tetrahedra and edges with four equivalent Nb(1)O5 square pyramids. In the second Nb site, Nb(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a see-saw-like geometry to one Nb(2) and three equivalent Nb(1) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(1), one Nb(2), and two equivalent Nb(1) atoms. In the third O site, O(3) is bonded in a square co-planar geometry to four equivalent Nb(2) atoms. is represented by the CIF file [CIF]
data_LiNb8O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.596
_cell_length_b   13.596
_cell_length_c   13.596
_cell_angle_alpha   153.825
_cell_angle_beta   153.825
_cell_angle_gamma   37.354
_symmetry_Int_Tables_number   1
_cell_volume   488.369
_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
  Li  Li0  1  0.500  0.500  0.000  1.0
  Li  Li1  1  0.250  0.750  0.500  1.0
  Nb  Nb2  1  0.800  0.046  0.246  1.0
  Nb  Nb3  1  0.626  0.882  0.256  1.0
  Nb  Nb4  1  0.304  0.050  0.254  1.0
  Nb  Nb5  1  0.120  0.876  0.244  1.0
  Nb  Nb6  1  0.630  0.374  0.256  1.0
  Nb  Nb7  1  0.796  0.050  0.746  1.0
  Nb  Nb8  1  0.632  0.876  0.756  1.0
  Nb  Nb9  1  0.446  0.200  0.246  1.0
  Nb  Nb10  1  0.124  0.368  0.244  1.0
  Nb  Nb11  1  0.626  0.370  0.744  1.0
  Nb  Nb12  1  0.950  0.204  0.254  1.0
  Nb  Nb13  1  0.124  0.880  0.756  1.0
  Nb  Nb14  1  0.800  0.554  0.754  1.0
  Nb  Nb15  1  0.954  0.200  0.754  1.0
  Nb  Nb16  1  0.118  0.374  0.744  1.0
  Nb  Nb17  1  0.950  0.696  0.746  1.0
  O  O18  1  0.712  0.985  0.273  1.0
  O  O19  1  0.189  0.962  0.227  1.0
  O  O20  1  0.561  0.288  0.273  1.0
  O  O21  1  0.726  0.458  0.268  1.0
  O  O22  1  0.735  0.962  0.773  1.0
  O  O23  1  0.542  0.811  0.268  1.0
  O  O24  1  0.038  0.265  0.227  1.0
  O  O25  1  0.208  0.439  0.232  1.0
  O  O26  1  0.712  0.439  0.727  1.0
  O  O27  1  0.375  0.625  0.250  1.0
  O  O28  1  0.375  0.125  0.750  1.0
  O  O29  1  0.208  0.976  0.768  1.0
  O  O30  1  0.542  0.274  0.732  1.0
  O  O31  1  0.015  0.288  0.727  1.0
  O  O32  1  0.189  0.458  0.732  1.0
  O  O33  1  0.024  0.792  0.232  1.0
  O  O34  1  0.561  0.792  0.768  1.0
  O  O35  1  0.375  0.625  0.750  1.0
  O  O36  1  0.875  0.625  0.250  1.0
  O  O37  1  0.038  0.811  0.773  1.0
[/CIF]
.
The compound described by LiNb8O10 crystallizes in the tetragonal I4_1/amd space group. Li(1) is bonded to four equivalent O(2) atoms to form LiO4 tetrahedra that share corners with eight equivalent Nb(1)O5 square pyramids. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(2) and three equivalent O(1) atoms to form NbO5 square pyramids that share corners with two equivalent Li(1)O4 tetrahedra and edges with four equivalent Nb(1)O5 square pyramids. In the second Nb site, Nb(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a see-saw-like geometry to one Nb(2) and three equivalent Nb(1) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(1), one Nb(2), and two equivalent Nb(1) atoms. In the third O site, O(3) is bonded in a square co-planar geometry to four equivalent Nb(2) atoms. is represented by the CIF file [CIF]
data_LiNb8O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.596
_cell_length_b   13.596
_cell_length_c   13.596
_cell_angle_alpha   153.825
_cell_angle_beta   153.825
_cell_angle_gamma   37.354
_symmetry_Int_Tables_number   1
_cell_volume   488.369
_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
  Li  Li0  1  0.500  0.500  0.000  1.0
  Li  Li1  1  0.250  0.750  0.500  1.0
  Nb  Nb2  1  0.800  0.046  0.246  1.0
  Nb  Nb3  1  0.626  0.882  0.256  1.0
  Nb  Nb4  1  0.304  0.050  0.254  1.0
  Nb  Nb5  1  0.120  0.876  0.244  1.0
  Nb  Nb6  1  0.630  0.374  0.256  1.0
  Nb  Nb7  1  0.796  0.050  0.746  1.0
  Nb  Nb8  1  0.632  0.876  0.756  1.0
  Nb  Nb9  1  0.446  0.200  0.246  1.0
  Nb  Nb10  1  0.124  0.368  0.244  1.0
  Nb  Nb11  1  0.626  0.370  0.744  1.0
  Nb  Nb12  1  0.950  0.204  0.254  1.0
  Nb  Nb13  1  0.124  0.880  0.756  1.0
  Nb  Nb14  1  0.800  0.554  0.754  1.0
  Nb  Nb15  1  0.954  0.200  0.754  1.0
  Nb  Nb16  1  0.118  0.374  0.744  1.0
  Nb  Nb17  1  0.950  0.696  0.746  1.0
  O  O18  1  0.712  0.985  0.273  1.0
  O  O19  1  0.189  0.962  0.227  1.0
  O  O20  1  0.561  0.288  0.273  1.0
  O  O21  1  0.726  0.458  0.268  1.0
  O  O22  1  0.735  0.962  0.773  1.0
  O  O23  1  0.542  0.811  0.268  1.0
  O  O24  1  0.038  0.265  0.227  1.0
  O  O25  1  0.208  0.439  0.232  1.0
  O  O26  1  0.712  0.439  0.727  1.0
  O  O27  1  0.375  0.625  0.250  1.0
  O  O28  1  0.375  0.125  0.750  1.0
  O  O29  1  0.208  0.976  0.768  1.0
  O  O30  1  0.542  0.274  0.732  1.0
  O  O31  1  0.015  0.288  0.727  1.0
  O  O32  1  0.189  0.458  0.732  1.0
  O  O33  1  0.024  0.792  0.232  1.0
  O  O34  1  0.561  0.792  0.768  1.0
  O  O35  1  0.375  0.625  0.750  1.0
  O  O36  1  0.875  0.625  0.250  1.0
  O  O37  1  0.038  0.811  0.773  1.0
[/CIF]
.