The material structure described by LiSr2Ti6N2O11 crystallizes in the triclinic P1 space group. Li(1) is bonded in a see-saw-like geometry to one O(5), one O(6), and two equivalent O(2) atoms. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(4), one O(8), two equivalent O(10), two equivalent O(11), and two equivalent O(3) atoms. In the second Sr site, Sr(2) is bonded in a 6-coordinate geometry to two equivalent N(2), two equivalent O(1), and two equivalent O(9) atoms. There are six inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one N(1), one O(1), one O(11), one O(3), and two equivalent O(4) atoms to form TiNO5 octahedra that share corners with two equivalent Ti(1)NO5 octahedra,  an edgeedge with one Ti(2)NO5 octahedra, and edges with two equivalent Ti(4)N3O3 octahedra. The corner-sharing octahedral tilt angles are 9°. In the second Ti site, Ti(2) is bonded to one N(1), one O(1), one O(2), one O(7), and two equivalent O(5) atoms to form TiNO5 octahedra that share corners with two equivalent Ti(2)NO5 octahedra,  an edgeedge with one Ti(1)NO5 octahedra, and edges with two equivalent Ti(4)N3O3 octahedra. The corner-sharing octahedral tilt angles are 16°. In the third Ti site, Ti(3) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(7), one O(8), and two equivalent O(6) atoms. In the fourth Ti site, Ti(4) is bonded to one N(2), two equivalent N(1), one O(4), one O(5), and one O(9) atom to form distorted TiN3O3 octahedra that share corners with two equivalent Ti(4)N3O3 octahedra, edges with two equivalent Ti(1)NO5 octahedra, and edges with two equivalent Ti(2)NO5 octahedra. The corner-sharing octahedral tilt angles are 26°. In the fifth Ti site, Ti(5) is bonded in a 6-coordinate geometry to one O(10), one O(5), one O(6), one O(9), and two equivalent O(7) atoms. In the sixth Ti site, Ti(6) is bonded in a 5-coordinate geometry to one N(2), one O(11), one O(6), and two equivalent O(8) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Ti(1), one Ti(2), and two equivalent Ti(4) atoms to form distorted NTi4 trigonal pyramids that share corners with two equivalent N(1)Ti4 trigonal pyramids, edges with two equivalent O(5)LiTi4 square pyramids, and  an edgeedge with one O(1)Sr2Ti2 tetrahedra. In the second N site, N(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(2), one Ti(4), and one Ti(6) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(2), one Ti(1), and one Ti(2) atom to form distorted OSr2Ti2 tetrahedra that share corners with two equivalent O(5)LiTi4 square pyramids, corners with two equivalent O(1)Sr2Ti2 tetrahedra, and  an edgeedge with one N(1)Ti4 trigonal pyramid. In the second O site, O(2) is bonded in a see-saw-like geometry to two equivalent Li(1), one Ti(2), and one Ti(3) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(1), one Ti(1), and one Ti(3) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Sr(1), one Ti(4), and two equivalent Ti(1) atoms. In the fifth O site, O(5) is bonded to one Li(1), one Ti(4), one Ti(5), and two equivalent Ti(2) atoms to form distorted OLiTi4 square pyramids that share corners with two equivalent O(5)LiTi4 square pyramids, corners with two equivalent O(1)Sr2Ti2 tetrahedra,  an edgeedge with one O(6)LiTi4 trigonal bipyramid, and edges with two equivalent N(1)Ti4 trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(1), one Ti(5), one Ti(6), and two equivalent Ti(3) atoms to form a mixture of distorted edge and corner-sharing OLiTi4 trigonal bipyramids. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Ti(2), one Ti(3), and two equivalent Ti(5) atoms. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Sr(1), one Ti(3), and two equivalent Ti(6) atoms. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(2), one Ti(4), and one Ti(5) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to two equivalent Sr(1) and one Ti(5) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Ti(1), and one Ti(6) atom. is represented by the CIF card [CIF]
data_Sr2LiTi6N2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.900
_cell_length_b   7.788
_cell_length_c   9.692
_cell_angle_alpha   77.861
_cell_angle_beta   90.013
_cell_angle_gamma   75.503
_symmetry_Int_Tables_number   1
_cell_volume   278.193
_cell_formula_units_Z   1
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  0.517  0.962  0.825  1.0
  Sr  Sr1  1  0.443  0.115  0.248  1.0
  Li  Li2  1  0.636  0.725  0.587  1.0
  Ti  Ti3  1  0.117  0.764  0.098  1.0
  Ti  Ti4  1  0.173  0.650  0.408  1.0
  Ti  Ti5  1  0.219  0.558  0.767  1.0
  Ti  Ti6  1  0.755  0.488  0.220  1.0
  Ti  Ti7  1  0.834  0.327  0.555  1.0
  Ti  Ti8  1  0.862  0.273  0.927  1.0
  N  N9  1  0.232  0.534  0.244  1.0
  N  N10  1  0.834  0.331  0.099  1.0
  O  O11  1  0.062  0.875  0.275  1.0
  O  O12  1  0.127  0.743  0.599  1.0
  O  O13  1  0.149  0.698  0.896  1.0
  O  O14  1  0.624  0.749  0.091  1.0
  O  O15  1  0.689  0.618  0.428  1.0
  O  O16  1  0.744  0.508  0.751  1.0
  O  O17  1  0.299  0.399  0.560  1.0
  O  O18  1  0.351  0.295  0.878  1.0
  O  O19  1  0.869  0.256  0.386  1.0
  O  O20  1  0.933  0.129  0.691  1.0
  O  O21  1  0.987  0.022  0.986  1.0
[/CIF]
.
The material structure described by LiSr2Ti6N2O11 crystallizes in the triclinic P1 space group. Li(1) is bonded in a see-saw-like geometry to one O(5), one O(6), and two equivalent O(2) atoms. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(4), one O(8), two equivalent O(10), two equivalent O(11), and two equivalent O(3) atoms. In the second Sr site, Sr(2) is bonded in a 6-coordinate geometry to two equivalent N(2), two equivalent O(1), and two equivalent O(9) atoms. There are six inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one N(1), one O(1), one O(11), one O(3), and two equivalent O(4) atoms to form TiNO5 octahedra that share corners with two equivalent Ti(1)NO5 octahedra,  an edgeedge with one Ti(2)NO5 octahedra, and edges with two equivalent Ti(4)N3O3 octahedra. The corner-sharing octahedral tilt angles are 9°. In the second Ti site, Ti(2) is bonded to one N(1), one O(1), one O(2), one O(7), and two equivalent O(5) atoms to form TiNO5 octahedra that share corners with two equivalent Ti(2)NO5 octahedra,  an edgeedge with one Ti(1)NO5 octahedra, and edges with two equivalent Ti(4)N3O3 octahedra. The corner-sharing octahedral tilt angles are 16°. In the third Ti site, Ti(3) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(7), one O(8), and two equivalent O(6) atoms. In the fourth Ti site, Ti(4) is bonded to one N(2), two equivalent N(1), one O(4), one O(5), and one O(9) atom to form distorted TiN3O3 octahedra that share corners with two equivalent Ti(4)N3O3 octahedra, edges with two equivalent Ti(1)NO5 octahedra, and edges with two equivalent Ti(2)NO5 octahedra. The corner-sharing octahedral tilt angles are 26°. In the fifth Ti site, Ti(5) is bonded in a 6-coordinate geometry to one O(10), one O(5), one O(6), one O(9), and two equivalent O(7) atoms. In the sixth Ti site, Ti(6) is bonded in a 5-coordinate geometry to one N(2), one O(11), one O(6), and two equivalent O(8) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Ti(1), one Ti(2), and two equivalent Ti(4) atoms to form distorted NTi4 trigonal pyramids that share corners with two equivalent N(1)Ti4 trigonal pyramids, edges with two equivalent O(5)LiTi4 square pyramids, and  an edgeedge with one O(1)Sr2Ti2 tetrahedra. In the second N site, N(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(2), one Ti(4), and one Ti(6) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(2), one Ti(1), and one Ti(2) atom to form distorted OSr2Ti2 tetrahedra that share corners with two equivalent O(5)LiTi4 square pyramids, corners with two equivalent O(1)Sr2Ti2 tetrahedra, and  an edgeedge with one N(1)Ti4 trigonal pyramid. In the second O site, O(2) is bonded in a see-saw-like geometry to two equivalent Li(1), one Ti(2), and one Ti(3) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(1), one Ti(1), and one Ti(3) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Sr(1), one Ti(4), and two equivalent Ti(1) atoms. In the fifth O site, O(5) is bonded to one Li(1), one Ti(4), one Ti(5), and two equivalent Ti(2) atoms to form distorted OLiTi4 square pyramids that share corners with two equivalent O(5)LiTi4 square pyramids, corners with two equivalent O(1)Sr2Ti2 tetrahedra,  an edgeedge with one O(6)LiTi4 trigonal bipyramid, and edges with two equivalent N(1)Ti4 trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(1), one Ti(5), one Ti(6), and two equivalent Ti(3) atoms to form a mixture of distorted edge and corner-sharing OLiTi4 trigonal bipyramids. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Ti(2), one Ti(3), and two equivalent Ti(5) atoms. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Sr(1), one Ti(3), and two equivalent Ti(6) atoms. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(2), one Ti(4), and one Ti(5) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to two equivalent Sr(1) and one Ti(5) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Ti(1), and one Ti(6) atom. is represented by the CIF card [CIF]
data_Sr2LiTi6N2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.900
_cell_length_b   7.788
_cell_length_c   9.692
_cell_angle_alpha   77.861
_cell_angle_beta   90.013
_cell_angle_gamma   75.503
_symmetry_Int_Tables_number   1
_cell_volume   278.193
_cell_formula_units_Z   1
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  0.517  0.962  0.825  1.0
  Sr  Sr1  1  0.443  0.115  0.248  1.0
  Li  Li2  1  0.636  0.725  0.587  1.0
  Ti  Ti3  1  0.117  0.764  0.098  1.0
  Ti  Ti4  1  0.173  0.650  0.408  1.0
  Ti  Ti5  1  0.219  0.558  0.767  1.0
  Ti  Ti6  1  0.755  0.488  0.220  1.0
  Ti  Ti7  1  0.834  0.327  0.555  1.0
  Ti  Ti8  1  0.862  0.273  0.927  1.0
  N  N9  1  0.232  0.534  0.244  1.0
  N  N10  1  0.834  0.331  0.099  1.0
  O  O11  1  0.062  0.875  0.275  1.0
  O  O12  1  0.127  0.743  0.599  1.0
  O  O13  1  0.149  0.698  0.896  1.0
  O  O14  1  0.624  0.749  0.091  1.0
  O  O15  1  0.689  0.618  0.428  1.0
  O  O16  1  0.744  0.508  0.751  1.0
  O  O17  1  0.299  0.399  0.560  1.0
  O  O18  1  0.351  0.295  0.878  1.0
  O  O19  1  0.869  0.256  0.386  1.0
  O  O20  1  0.933  0.129  0.691  1.0
  O  O21  1  0.987  0.022  0.986  1.0
[/CIF]
.