The structure described by LiSr2Ti6N2O11 crystallizes in the triclinic P1 space group. Li(1) is bonded in a distorted see-saw-like geometry to one O(4), one O(5), and two equivalent O(1) atoms. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to one O(4), one O(8), two equivalent O(10), two equivalent O(11), two equivalent O(2), and two equivalent O(3) atoms. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to one N(1), two equivalent N(2), 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  a cornercorner with one Ti(3)O6 octahedra, 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 range from 9-14°. 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,  an edgeedge with one Ti(3)O6 octahedra, and edges with two equivalent Ti(4)N3O3 octahedra. The corner-sharing octahedral tilt angles are 12°. In the third Ti site, Ti(3) is bonded to one O(2), one O(3), one O(7), one O(8), and two equivalent O(6) atoms to form distorted TiO6 octahedra that share  a cornercorner with one Ti(1)NO5 octahedra, corners with two equivalent Ti(3)O6 octahedra, and  an edgeedge with one Ti(2)NO5 octahedra. The corner-sharing octahedral tilt angles range from 14-28°. 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 23°. 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 6-coordinate geometry to one N(2), one O(10), 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 in a 5-coordinate geometry to one Sr(2), one Ti(1), one Ti(2), and two equivalent Ti(4) atoms. 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 in a 4-coordinate geometry to two equivalent Li(1), one Ti(1), and one Ti(2) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to two equivalent Sr(1), one Ti(2), and one Ti(3) atom. In the third O site, O(3) is bonded in a distorted linear 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 Li(1), 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,  a cornercorner with one O(6)Ti4 trigonal pyramid, and edges with two equivalent O(7)Ti4 trigonal pyramids. In the sixth O site, O(6) is bonded to one Ti(5), one Ti(6), and two equivalent Ti(3) atoms to form OTi4 trigonal pyramids that share  a cornercorner with one O(5)LiTi4 square pyramid, corners with two equivalent O(6)Ti4 trigonal pyramids, and edges with two equivalent O(7)Ti4 trigonal pyramids. In the seventh O site, O(7) is bonded to one Ti(2), one Ti(3), and two equivalent Ti(5) atoms to form OTi4 trigonal pyramids that share corners with two equivalent O(7)Ti4 trigonal pyramids, edges with two equivalent O(5)LiTi4 square pyramids, and edges with two equivalent O(6)Ti4 trigonal pyramids. 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 4-coordinate 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 distorted single-bond geometry to two equivalent Sr(1), one Ti(5), and one Ti(6) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(1), one Ti(1), and one Ti(6) atom. is represented by the CIF file [CIF]
data_Sr2LiTi6N2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.919
_cell_length_b   7.969
_cell_length_c   9.329
_cell_angle_alpha   81.488
_cell_angle_beta   89.983
_cell_angle_gamma   75.714
_symmetry_Int_Tables_number   1
_cell_volume   279.018
_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  0.537  0.925  0.797  1.0
  Sr  Sr1  1  0.413  0.172  0.244  1.0
  Li  Li2  1  0.587  0.822  0.294  1.0
  Ti  Ti3  1  0.125  0.747  0.092  1.0
  Ti  Ti4  1  0.175  0.647  0.433  1.0
  Ti  Ti5  1  0.237  0.523  0.765  1.0
  Ti  Ti6  1  0.753  0.492  0.220  1.0
  Ti  Ti7  1  0.838  0.323  0.570  1.0
  Ti  Ti8  1  0.880  0.238  0.922  1.0
  N  N9  1  0.233  0.530  0.245  1.0
  N  N10  1  0.836  0.327  0.093  1.0
  O  O11  1  0.066  0.864  0.302  1.0
  O  O12  1  0.137  0.721  0.624  1.0
  O  O13  1  0.168  0.660  0.912  1.0
  O  O14  1  0.625  0.747  0.109  1.0
  O  O15  1  0.689  0.619  0.431  1.0
  O  O16  1  0.768  0.462  0.758  1.0
  O  O17  1  0.301  0.395  0.569  1.0
  O  O18  1  0.369  0.260  0.876  1.0
  O  O19  1  0.863  0.273  0.384  1.0
  O  O20  1  0.941  0.117  0.682  1.0
  O  O21  1  0.001  0.995  0.983  1.0
[/CIF]
.
The structure described by LiSr2Ti6N2O11 crystallizes in the triclinic P1 space group. Li(1) is bonded in a distorted see-saw-like geometry to one O(4), one O(5), and two equivalent O(1) atoms. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to one O(4), one O(8), two equivalent O(10), two equivalent O(11), two equivalent O(2), and two equivalent O(3) atoms. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to one N(1), two equivalent N(2), 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  a cornercorner with one Ti(3)O6 octahedra, 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 range from 9-14°. 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,  an edgeedge with one Ti(3)O6 octahedra, and edges with two equivalent Ti(4)N3O3 octahedra. The corner-sharing octahedral tilt angles are 12°. In the third Ti site, Ti(3) is bonded to one O(2), one O(3), one O(7), one O(8), and two equivalent O(6) atoms to form distorted TiO6 octahedra that share  a cornercorner with one Ti(1)NO5 octahedra, corners with two equivalent Ti(3)O6 octahedra, and  an edgeedge with one Ti(2)NO5 octahedra. The corner-sharing octahedral tilt angles range from 14-28°. 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 23°. 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 6-coordinate geometry to one N(2), one O(10), 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 in a 5-coordinate geometry to one Sr(2), one Ti(1), one Ti(2), and two equivalent Ti(4) atoms. 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 in a 4-coordinate geometry to two equivalent Li(1), one Ti(1), and one Ti(2) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to two equivalent Sr(1), one Ti(2), and one Ti(3) atom. In the third O site, O(3) is bonded in a distorted linear 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 Li(1), 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,  a cornercorner with one O(6)Ti4 trigonal pyramid, and edges with two equivalent O(7)Ti4 trigonal pyramids. In the sixth O site, O(6) is bonded to one Ti(5), one Ti(6), and two equivalent Ti(3) atoms to form OTi4 trigonal pyramids that share  a cornercorner with one O(5)LiTi4 square pyramid, corners with two equivalent O(6)Ti4 trigonal pyramids, and edges with two equivalent O(7)Ti4 trigonal pyramids. In the seventh O site, O(7) is bonded to one Ti(2), one Ti(3), and two equivalent Ti(5) atoms to form OTi4 trigonal pyramids that share corners with two equivalent O(7)Ti4 trigonal pyramids, edges with two equivalent O(5)LiTi4 square pyramids, and edges with two equivalent O(6)Ti4 trigonal pyramids. 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 4-coordinate 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 distorted single-bond geometry to two equivalent Sr(1), one Ti(5), and one Ti(6) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(1), one Ti(1), and one Ti(6) atom. is represented by the CIF file [CIF]
data_Sr2LiTi6N2O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.919
_cell_length_b   7.969
_cell_length_c   9.329
_cell_angle_alpha   81.488
_cell_angle_beta   89.983
_cell_angle_gamma   75.714
_symmetry_Int_Tables_number   1
_cell_volume   279.018
_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  0.537  0.925  0.797  1.0
  Sr  Sr1  1  0.413  0.172  0.244  1.0
  Li  Li2  1  0.587  0.822  0.294  1.0
  Ti  Ti3  1  0.125  0.747  0.092  1.0
  Ti  Ti4  1  0.175  0.647  0.433  1.0
  Ti  Ti5  1  0.237  0.523  0.765  1.0
  Ti  Ti6  1  0.753  0.492  0.220  1.0
  Ti  Ti7  1  0.838  0.323  0.570  1.0
  Ti  Ti8  1  0.880  0.238  0.922  1.0
  N  N9  1  0.233  0.530  0.245  1.0
  N  N10  1  0.836  0.327  0.093  1.0
  O  O11  1  0.066  0.864  0.302  1.0
  O  O12  1  0.137  0.721  0.624  1.0
  O  O13  1  0.168  0.660  0.912  1.0
  O  O14  1  0.625  0.747  0.109  1.0
  O  O15  1  0.689  0.619  0.431  1.0
  O  O16  1  0.768  0.462  0.758  1.0
  O  O17  1  0.301  0.395  0.569  1.0
  O  O18  1  0.369  0.260  0.876  1.0
  O  O19  1  0.863  0.273  0.384  1.0
  O  O20  1  0.941  0.117  0.682  1.0
  O  O21  1  0.001  0.995  0.983  1.0
[/CIF]
.