The structure described by Li6Sr3Nb2O11 crystallizes in the orthorhombic Pmma space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form LiO4 tetrahedra that share corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Li(2)O5 trigonal bipyramids, corners with two equivalent Nb(1)O5 trigonal bipyramids,  an edgeedge with one Nb(2)O6 octahedra, and  an edgeedge with one Li(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(5), two equivalent O(1), and two equivalent O(4) atoms to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Nb(1)O5 trigonal bipyramid, edges with two equivalent Nb(2)O6 octahedra,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Li(2)O5 trigonal bipyramid. In the third Li site, Li(3) is bonded to one O(2), one O(5), and two equivalent O(1) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid, corners with two equivalent Nb(1)O5 trigonal bipyramids, and  an edgeedge with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 14°. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(2), two equivalent O(3), and two equivalent O(5) atoms to form NbO5 trigonal bipyramids that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra, and corners with two equivalent Li(2)O5 trigonal bipyramids. In the second Nb site, Nb(2) is bonded to two equivalent O(4) and four equivalent O(1) atoms to form NbO6 octahedra that share corners with four equivalent Li(3)O4 tetrahedra, edges with two equivalent Li(1)O4 tetrahedra, and edges with four equivalent Li(2)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Li(1), two equivalent Sr(1), and one Nb(1) atom. In the second O site, O(4) is bonded to two equivalent Li(2), one Sr(2), two equivalent Sr(1), and one Nb(2) atom to form distorted OSr3Li2Nb octahedra that share  a cornercorner with one O(4)Sr3Li2Nb octahedra, corners with four equivalent O(1)Sr2Li3Nb octahedra,  an edgeedge with one O(4)Sr3Li2Nb octahedra, edges with six equivalent O(1)Sr2Li3Nb octahedra, and  a faceface with one O(4)Sr3Li2Nb octahedra. The corner-sharing octahedral tilt angles range from 0-36°. In the third O site, O(5) is bonded in a 6-coordinate geometry to one Li(2), one Li(3), one Sr(2), two equivalent Sr(1), and one Nb(1) atom. In the fourth O site, O(1) is bonded to one Li(1), one Li(2), one Li(3), one Sr(1), one Sr(2), and one Nb(2) atom to form distorted OSr2Li3Nb octahedra that share corners with two equivalent O(4)Sr3Li2Nb octahedra, corners with three equivalent O(1)Sr2Li3Nb octahedra, edges with two equivalent O(1)Sr2Li3Nb octahedra, edges with three equivalent O(4)Sr3Li2Nb octahedra, and  a faceface with one O(1)Sr2Li3Nb octahedra. The corner-sharing octahedral tilt angles range from 0-70°. In the fifth O site, O(2) is bonded in a trigonal planar geometry to two equivalent Li(3) and one Nb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr3Li6Nb2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.833
_cell_length_b   8.345
_cell_length_c   10.591
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   515.551
_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
  Sr  Sr0  1  0.500  0.263  0.500  1.0
  Sr  Sr1  1  0.500  0.737  0.500  1.0
  Sr  Sr2  1  0.500  0.737  0.000  1.0
  Sr  Sr3  1  0.500  0.263  0.000  1.0
  Sr  Sr4  1  0.618  0.000  0.750  1.0
  Sr  Sr5  1  0.382  0.000  0.250  1.0
  Li  Li6  1  0.000  0.356  0.500  1.0
  Li  Li7  1  0.000  0.644  0.500  1.0
  Li  Li8  1  0.000  0.644  0.000  1.0
  Li  Li9  1  0.000  0.356  0.000  1.0
  Li  Li10  1  0.149  0.146  0.750  1.0
  Li  Li11  1  0.851  0.854  0.250  1.0
  Li  Li12  1  0.149  0.854  0.750  1.0
  Li  Li13  1  0.851  0.146  0.250  1.0
  Li  Li14  1  0.780  0.315  0.750  1.0
  Li  Li15  1  0.220  0.685  0.250  1.0
  Li  Li16  1  0.780  0.685  0.750  1.0
  Li  Li17  1  0.220  0.315  0.250  1.0
  Nb  Nb18  1  0.262  0.500  0.750  1.0
  Nb  Nb19  1  0.738  0.500  0.250  1.0
  Nb  Nb20  1  0.000  0.000  0.500  1.0
  Nb  Nb21  1  0.000  0.000  0.000  1.0
  O  O22  1  0.132  0.176  0.111  1.0
  O  O23  1  0.868  0.824  0.889  1.0
  O  O24  1  0.132  0.824  0.389  1.0
  O  O25  1  0.868  0.176  0.889  1.0
  O  O26  1  0.868  0.176  0.611  1.0
  O  O27  1  0.132  0.824  0.111  1.0
  O  O28  1  0.868  0.824  0.611  1.0
  O  O29  1  0.132  0.176  0.389  1.0
  O  O30  1  0.941  0.500  0.750  1.0
  O  O31  1  0.059  0.500  0.250  1.0
  O  O32  1  0.251  0.500  0.559  1.0
  O  O33  1  0.749  0.500  0.441  1.0
  O  O34  1  0.251  0.500  0.941  1.0
  O  O35  1  0.749  0.500  0.059  1.0
  O  O36  1  0.283  0.000  0.608  1.0
  O  O37  1  0.717  0.000  0.392  1.0
  O  O38  1  0.283  0.000  0.892  1.0
  O  O39  1  0.717  0.000  0.108  1.0
  O  O40  1  0.431  0.300  0.750  1.0
  O  O41  1  0.569  0.700  0.250  1.0
  O  O42  1  0.431  0.700  0.750  1.0
  O  O43  1  0.569  0.300  0.250  1.0
[/CIF]
.
The structure described by Li6Sr3Nb2O11 crystallizes in the orthorhombic Pmma space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form LiO4 tetrahedra that share corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Li(2)O5 trigonal bipyramids, corners with two equivalent Nb(1)O5 trigonal bipyramids,  an edgeedge with one Nb(2)O6 octahedra, and  an edgeedge with one Li(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(5), two equivalent O(1), and two equivalent O(4) atoms to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Nb(1)O5 trigonal bipyramid, edges with two equivalent Nb(2)O6 octahedra,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Li(2)O5 trigonal bipyramid. In the third Li site, Li(3) is bonded to one O(2), one O(5), and two equivalent O(1) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid, corners with two equivalent Nb(1)O5 trigonal bipyramids, and  an edgeedge with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 14°. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(2), two equivalent O(3), and two equivalent O(5) atoms to form NbO5 trigonal bipyramids that share corners with four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra, and corners with two equivalent Li(2)O5 trigonal bipyramids. In the second Nb site, Nb(2) is bonded to two equivalent O(4) and four equivalent O(1) atoms to form NbO6 octahedra that share corners with four equivalent Li(3)O4 tetrahedra, edges with two equivalent Li(1)O4 tetrahedra, and edges with four equivalent Li(2)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Li(1), two equivalent Sr(1), and one Nb(1) atom. In the second O site, O(4) is bonded to two equivalent Li(2), one Sr(2), two equivalent Sr(1), and one Nb(2) atom to form distorted OSr3Li2Nb octahedra that share  a cornercorner with one O(4)Sr3Li2Nb octahedra, corners with four equivalent O(1)Sr2Li3Nb octahedra,  an edgeedge with one O(4)Sr3Li2Nb octahedra, edges with six equivalent O(1)Sr2Li3Nb octahedra, and  a faceface with one O(4)Sr3Li2Nb octahedra. The corner-sharing octahedral tilt angles range from 0-36°. In the third O site, O(5) is bonded in a 6-coordinate geometry to one Li(2), one Li(3), one Sr(2), two equivalent Sr(1), and one Nb(1) atom. In the fourth O site, O(1) is bonded to one Li(1), one Li(2), one Li(3), one Sr(1), one Sr(2), and one Nb(2) atom to form distorted OSr2Li3Nb octahedra that share corners with two equivalent O(4)Sr3Li2Nb octahedra, corners with three equivalent O(1)Sr2Li3Nb octahedra, edges with two equivalent O(1)Sr2Li3Nb octahedra, edges with three equivalent O(4)Sr3Li2Nb octahedra, and  a faceface with one O(1)Sr2Li3Nb octahedra. The corner-sharing octahedral tilt angles range from 0-70°. In the fifth O site, O(2) is bonded in a trigonal planar geometry to two equivalent Li(3) and one Nb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr3Li6Nb2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.833
_cell_length_b   8.345
_cell_length_c   10.591
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   515.551
_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
  Sr  Sr0  1  0.500  0.263  0.500  1.0
  Sr  Sr1  1  0.500  0.737  0.500  1.0
  Sr  Sr2  1  0.500  0.737  0.000  1.0
  Sr  Sr3  1  0.500  0.263  0.000  1.0
  Sr  Sr4  1  0.618  0.000  0.750  1.0
  Sr  Sr5  1  0.382  0.000  0.250  1.0
  Li  Li6  1  0.000  0.356  0.500  1.0
  Li  Li7  1  0.000  0.644  0.500  1.0
  Li  Li8  1  0.000  0.644  0.000  1.0
  Li  Li9  1  0.000  0.356  0.000  1.0
  Li  Li10  1  0.149  0.146  0.750  1.0
  Li  Li11  1  0.851  0.854  0.250  1.0
  Li  Li12  1  0.149  0.854  0.750  1.0
  Li  Li13  1  0.851  0.146  0.250  1.0
  Li  Li14  1  0.780  0.315  0.750  1.0
  Li  Li15  1  0.220  0.685  0.250  1.0
  Li  Li16  1  0.780  0.685  0.750  1.0
  Li  Li17  1  0.220  0.315  0.250  1.0
  Nb  Nb18  1  0.262  0.500  0.750  1.0
  Nb  Nb19  1  0.738  0.500  0.250  1.0
  Nb  Nb20  1  0.000  0.000  0.500  1.0
  Nb  Nb21  1  0.000  0.000  0.000  1.0
  O  O22  1  0.132  0.176  0.111  1.0
  O  O23  1  0.868  0.824  0.889  1.0
  O  O24  1  0.132  0.824  0.389  1.0
  O  O25  1  0.868  0.176  0.889  1.0
  O  O26  1  0.868  0.176  0.611  1.0
  O  O27  1  0.132  0.824  0.111  1.0
  O  O28  1  0.868  0.824  0.611  1.0
  O  O29  1  0.132  0.176  0.389  1.0
  O  O30  1  0.941  0.500  0.750  1.0
  O  O31  1  0.059  0.500  0.250  1.0
  O  O32  1  0.251  0.500  0.559  1.0
  O  O33  1  0.749  0.500  0.441  1.0
  O  O34  1  0.251  0.500  0.941  1.0
  O  O35  1  0.749  0.500  0.059  1.0
  O  O36  1  0.283  0.000  0.608  1.0
  O  O37  1  0.717  0.000  0.392  1.0
  O  O38  1  0.283  0.000  0.892  1.0
  O  O39  1  0.717  0.000  0.108  1.0
  O  O40  1  0.431  0.300  0.750  1.0
  O  O41  1  0.569  0.700  0.250  1.0
  O  O42  1  0.431  0.700  0.750  1.0
  O  O43  1  0.569  0.300  0.250  1.0
[/CIF]
.