The material structure described by Li9Ti5(SiO8)2 is Caswellsilverite-derived structured and crystallizes in the triclinic P-1 space group. There are five inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(8) atoms to form distorted LiO6 octahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Si(1)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, edges with three equivalent Li(2)O6 octahedra, and edges with three equivalent Si(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-17°. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(8) atom to form LiO6 octahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, corners with two equivalent Si(1)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Si(1)O6 octahedra, and edges with three equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-15°. In the third Li site, Li(3) is bonded to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form LiO6 octahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Si(1)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Ti(3)O6 octahedra,  an edgeedge with one Si(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, and edges with three equivalent Li(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-13°. In the fourth Li site, Li(4) is bonded to one O(3), one O(5), two equivalent O(6), and two equivalent O(7) atoms to form LiO6 octahedra that share  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Si(1)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ti(3)O6 octahedra, edges with three equivalent Li(3)O6 octahedra, and edges with three equivalent Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-6°. In the fifth Li site, Li(5) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(8) atoms to form LiO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(2)O6 octahedra, corners with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, and edges with four equivalent Si(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 13-14°. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(7) atom to form TiO6 octahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Li(3)O6 octahedra, corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(4)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra,  an edgeedge with one Ti(3)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, and edges with two equivalent Si(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-13°. In the second Ti site, Ti(2) is bonded to one O(3), one O(4), one O(5), one O(7), and two equivalent O(6) atoms to form TiO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra, corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Li(4)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra,  an edgeedge with one Si(1)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ti(3)O6 octahedra, and edges with three equivalent Li(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-17°. In the third Ti site, Ti(3) is bonded to two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms to form TiO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Li(4)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with four equivalent Li(4)O6 octahedra, and edges with four equivalent Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. Si(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(8) atoms to form SiO6 octahedra that share  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra, corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(2)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra,  an edgeedge with one Si(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, and edges with three equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-11°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Li(3), one Li(5), one Ti(1), and one Si(1) atom to form OLi4TiSi octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(3)Li3Ti3 octahedra,  an edgeedge with one O(7)Li3Ti3 octahedra, edges with two equivalent O(4)Li3Ti2Si octahedra, edges with two equivalent O(5)Li3Ti2Si octahedra, edges with three equivalent O(8)Li4Si2 octahedra, and edges with three equivalent O(2)Li4TiSi octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the second O site, O(2) is bonded to one Li(2), one Li(5), two equivalent Li(1), one Ti(1), and one Si(1) atom to form OLi4TiSi octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(5)Li3Ti2Si octahedra,  an edgeedge with one O(3)Li3Ti3 octahedra,  an edgeedge with one O(2)Li4TiSi octahedra, edges with two equivalent O(4)Li3Ti2Si octahedra, edges with three equivalent O(1)Li4TiSi octahedra, and edges with four equivalent O(8)Li4Si2 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the third O site, O(3) is bonded to one Li(2), one Li(3), one Li(4), one Ti(1), one Ti(2), and one Ti(3) atom to form OLi3Ti3 octahedra that share  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  an edgeedge with one O(1)Li4TiSi octahedra,  an edgeedge with one O(2)Li4TiSi octahedra, edges with two equivalent O(4)Li3Ti2Si octahedra, edges with two equivalent O(5)Li3Ti2Si octahedra, edges with three equivalent O(6)Li3Ti3 octahedra, and edges with three equivalent O(7)Li3Ti3 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Li(3), one Ti(1), one Ti(2), and one Si(1) atom to form OLi3Ti2Si octahedra that share  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(6)Li3Ti3 octahedra,  an edgeedge with one O(7)Li3Ti3 octahedra, edges with two equivalent O(5)Li3Ti2Si octahedra, edges with two equivalent O(3)Li3Ti3 octahedra, edges with two equivalent O(8)Li4Si2 octahedra, edges with two equivalent O(1)Li4TiSi octahedra, and edges with two equivalent O(2)Li4TiSi octahedra. The corner-sharing octahedral tilt angles range from 3-12°. In the fifth O site, O(5) is bonded to one Li(2), one Li(3), one Li(4), one Ti(1), one Ti(2), and one Si(1) atom to form OLi3Ti2Si octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(8)Li4Si2 octahedra,  an edgeedge with one O(2)Li4TiSi octahedra, edges with two equivalent O(4)Li3Ti2Si octahedra, edges with two equivalent O(3)Li3Ti3 octahedra, edges with two equivalent O(6)Li3Ti3 octahedra, edges with two equivalent O(7)Li3Ti3 octahedra, and edges with two equivalent O(1)Li4TiSi octahedra. The corner-sharing octahedral tilt angles range from 1-13°. In the sixth O site, O(6) is bonded to one Li(3), two equivalent Li(4), one Ti(3), and two equivalent Ti(2) atoms to form OLi3Ti3 octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  an edgeedge with one O(4)Li3Ti2Si octahedra, edges with two equivalent O(5)Li3Ti2Si octahedra, edges with two equivalent O(6)Li3Ti3 octahedra, edges with three equivalent O(3)Li3Ti3 octahedra, and edges with four equivalent O(7)Li3Ti3 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. In the seventh O site, O(7) is bonded to one Li(3), two equivalent Li(4), one Ti(1), one Ti(2), and one Ti(3) atom to form OLi3Ti3 octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(4)Li3Ti2Si octahedra,  an edgeedge with one O(7)Li3Ti3 octahedra,  an edgeedge with one O(1)Li4TiSi octahedra, edges with two equivalent O(5)Li3Ti2Si octahedra, edges with three equivalent O(3)Li3Ti3 octahedra, and edges with four equivalent O(6)Li3Ti3 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the eighth O site, O(8) is bonded to one Li(2), one Li(5), two equivalent Li(1), and two equivalent Si(1) atoms to form OLi4Si2 octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(5)Li3Ti2Si octahedra, edges with two equivalent O(4)Li3Ti2Si octahedra, edges with two equivalent O(8)Li4Si2 octahedra, edges with three equivalent O(1)Li4TiSi octahedra, and edges with four equivalent O(2)Li4TiSi octahedra. The corner-sharing octahedral tilt angles range from 0-9°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li9Ti5(SiO8)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.002
_cell_length_b   5.177
_cell_length_c   11.204
_cell_angle_alpha   80.063
_cell_angle_beta   85.729
_cell_angle_gamma   80.477
_symmetry_Int_Tables_number   1
_cell_volume   281.525
_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
  Li  Li0  1  0.748  0.929  0.558  1.0
  Li  Li1  1  0.248  0.817  0.680  1.0
  Li  Li2  1  0.752  0.676  0.810  1.0
  Li  Li3  1  0.253  0.563  0.940  1.0
  Li  Li4  1  0.747  0.437  0.060  1.0
  Li  Li5  1  0.248  0.324  0.190  1.0
  Li  Li6  1  0.752  0.183  0.320  1.0
  Li  Li7  1  0.252  0.071  0.442  1.0
  Li  Li8  1  0.500  0.500  0.500  1.0
  Ti  Ti9  1  0.500  0.250  0.747  1.0
  Ti  Ti10  1  0.002  0.115  0.883  1.0
  Ti  Ti11  1  0.500  0.000  0.000  1.0
  Ti  Ti12  1  0.998  0.885  0.117  1.0
  Ti  Ti13  1  0.500  0.750  0.253  1.0
  Si  Si14  1  0.999  0.381  0.617  1.0
  Si  Si15  1  0.001  0.619  0.383  1.0
  O  O16  1  0.665  0.557  0.654  1.0
  O  O17  1  0.335  0.183  0.600  1.0
  O  O18  1  0.380  0.912  0.840  1.0
  O  O19  1  0.881  0.079  0.705  1.0
  O  O20  1  0.119  0.453  0.759  1.0
  O  O21  1  0.872  0.773  0.966  1.0
  O  O22  1  0.621  0.337  0.902  1.0
  O  O23  1  0.128  0.227  0.034  1.0
  O  O24  1  0.379  0.663  0.098  1.0
  O  O25  1  0.881  0.547  0.241  1.0
  O  O26  1  0.620  0.088  0.160  1.0
  O  O27  1  0.335  0.443  0.346  1.0
  O  O28  1  0.665  0.817  0.400  1.0
  O  O29  1  0.119  0.921  0.295  1.0
  O  O30  1  0.102  0.678  0.526  1.0
  O  O31  1  0.898  0.322  0.474  1.0
[/CIF]
.
The material structure described by Li9Ti5(SiO8)2 is Caswellsilverite-derived structured and crystallizes in the triclinic P-1 space group. There are five inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(8) atoms to form distorted LiO6 octahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Si(1)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, edges with three equivalent Li(2)O6 octahedra, and edges with three equivalent Si(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-17°. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(8) atom to form LiO6 octahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, corners with two equivalent Si(1)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Si(1)O6 octahedra, and edges with three equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-15°. In the third Li site, Li(3) is bonded to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form LiO6 octahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Si(1)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Ti(3)O6 octahedra,  an edgeedge with one Si(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, and edges with three equivalent Li(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-13°. In the fourth Li site, Li(4) is bonded to one O(3), one O(5), two equivalent O(6), and two equivalent O(7) atoms to form LiO6 octahedra that share  a cornercorner with one Ti(3)O6 octahedra,  a cornercorner with one Si(1)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ti(3)O6 octahedra, edges with three equivalent Li(3)O6 octahedra, and edges with three equivalent Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-6°. In the fifth Li site, Li(5) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(8) atoms to form LiO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(2)O6 octahedra, corners with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with four equivalent Li(1)O6 octahedra, and edges with four equivalent Si(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 13-14°. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(7) atom to form TiO6 octahedra that share  a cornercorner with one Li(2)O6 octahedra,  a cornercorner with one Li(3)O6 octahedra, corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(4)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra,  an edgeedge with one Ti(3)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, and edges with two equivalent Si(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-13°. In the second Ti site, Ti(2) is bonded to one O(3), one O(4), one O(5), one O(7), and two equivalent O(6) atoms to form TiO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra, corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Li(4)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra,  an edgeedge with one Si(1)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ti(3)O6 octahedra, and edges with three equivalent Li(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-17°. In the third Ti site, Ti(3) is bonded to two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms to form TiO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Li(4)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with four equivalent Li(4)O6 octahedra, and edges with four equivalent Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. Si(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(8) atoms to form SiO6 octahedra that share  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra, corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(2)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra,  an edgeedge with one Si(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, and edges with three equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-11°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Li(3), one Li(5), one Ti(1), and one Si(1) atom to form OLi4TiSi octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(3)Li3Ti3 octahedra,  an edgeedge with one O(7)Li3Ti3 octahedra, edges with two equivalent O(4)Li3Ti2Si octahedra, edges with two equivalent O(5)Li3Ti2Si octahedra, edges with three equivalent O(8)Li4Si2 octahedra, and edges with three equivalent O(2)Li4TiSi octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the second O site, O(2) is bonded to one Li(2), one Li(5), two equivalent Li(1), one Ti(1), and one Si(1) atom to form OLi4TiSi octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(5)Li3Ti2Si octahedra,  an edgeedge with one O(3)Li3Ti3 octahedra,  an edgeedge with one O(2)Li4TiSi octahedra, edges with two equivalent O(4)Li3Ti2Si octahedra, edges with three equivalent O(1)Li4TiSi octahedra, and edges with four equivalent O(8)Li4Si2 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the third O site, O(3) is bonded to one Li(2), one Li(3), one Li(4), one Ti(1), one Ti(2), and one Ti(3) atom to form OLi3Ti3 octahedra that share  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  an edgeedge with one O(1)Li4TiSi octahedra,  an edgeedge with one O(2)Li4TiSi octahedra, edges with two equivalent O(4)Li3Ti2Si octahedra, edges with two equivalent O(5)Li3Ti2Si octahedra, edges with three equivalent O(6)Li3Ti3 octahedra, and edges with three equivalent O(7)Li3Ti3 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Li(3), one Ti(1), one Ti(2), and one Si(1) atom to form OLi3Ti2Si octahedra that share  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(6)Li3Ti3 octahedra,  an edgeedge with one O(7)Li3Ti3 octahedra, edges with two equivalent O(5)Li3Ti2Si octahedra, edges with two equivalent O(3)Li3Ti3 octahedra, edges with two equivalent O(8)Li4Si2 octahedra, edges with two equivalent O(1)Li4TiSi octahedra, and edges with two equivalent O(2)Li4TiSi octahedra. The corner-sharing octahedral tilt angles range from 3-12°. In the fifth O site, O(5) is bonded to one Li(2), one Li(3), one Li(4), one Ti(1), one Ti(2), and one Si(1) atom to form OLi3Ti2Si octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(8)Li4Si2 octahedra,  an edgeedge with one O(2)Li4TiSi octahedra, edges with two equivalent O(4)Li3Ti2Si octahedra, edges with two equivalent O(3)Li3Ti3 octahedra, edges with two equivalent O(6)Li3Ti3 octahedra, edges with two equivalent O(7)Li3Ti3 octahedra, and edges with two equivalent O(1)Li4TiSi octahedra. The corner-sharing octahedral tilt angles range from 1-13°. In the sixth O site, O(6) is bonded to one Li(3), two equivalent Li(4), one Ti(3), and two equivalent Ti(2) atoms to form OLi3Ti3 octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  an edgeedge with one O(4)Li3Ti2Si octahedra, edges with two equivalent O(5)Li3Ti2Si octahedra, edges with two equivalent O(6)Li3Ti3 octahedra, edges with three equivalent O(3)Li3Ti3 octahedra, and edges with four equivalent O(7)Li3Ti3 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. In the seventh O site, O(7) is bonded to one Li(3), two equivalent Li(4), one Ti(1), one Ti(2), and one Ti(3) atom to form OLi3Ti3 octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(6)Li3Ti3 octahedra,  a cornercorner with one O(7)Li3Ti3 octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(4)Li3Ti2Si octahedra,  an edgeedge with one O(7)Li3Ti3 octahedra,  an edgeedge with one O(1)Li4TiSi octahedra, edges with two equivalent O(5)Li3Ti2Si octahedra, edges with three equivalent O(3)Li3Ti3 octahedra, and edges with four equivalent O(6)Li3Ti3 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the eighth O site, O(8) is bonded to one Li(2), one Li(5), two equivalent Li(1), and two equivalent Si(1) atoms to form OLi4Si2 octahedra that share  a cornercorner with one O(4)Li3Ti2Si octahedra,  a cornercorner with one O(5)Li3Ti2Si octahedra,  a cornercorner with one O(3)Li3Ti3 octahedra,  a cornercorner with one O(8)Li4Si2 octahedra,  a cornercorner with one O(1)Li4TiSi octahedra,  a cornercorner with one O(2)Li4TiSi octahedra,  an edgeedge with one O(5)Li3Ti2Si octahedra, edges with two equivalent O(4)Li3Ti2Si octahedra, edges with two equivalent O(8)Li4Si2 octahedra, edges with three equivalent O(1)Li4TiSi octahedra, and edges with four equivalent O(2)Li4TiSi octahedra. The corner-sharing octahedral tilt angles range from 0-9°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li9Ti5(SiO8)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.002
_cell_length_b   5.177
_cell_length_c   11.204
_cell_angle_alpha   80.063
_cell_angle_beta   85.729
_cell_angle_gamma   80.477
_symmetry_Int_Tables_number   1
_cell_volume   281.525
_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
  Li  Li0  1  0.748  0.929  0.558  1.0
  Li  Li1  1  0.248  0.817  0.680  1.0
  Li  Li2  1  0.752  0.676  0.810  1.0
  Li  Li3  1  0.253  0.563  0.940  1.0
  Li  Li4  1  0.747  0.437  0.060  1.0
  Li  Li5  1  0.248  0.324  0.190  1.0
  Li  Li6  1  0.752  0.183  0.320  1.0
  Li  Li7  1  0.252  0.071  0.442  1.0
  Li  Li8  1  0.500  0.500  0.500  1.0
  Ti  Ti9  1  0.500  0.250  0.747  1.0
  Ti  Ti10  1  0.002  0.115  0.883  1.0
  Ti  Ti11  1  0.500  0.000  0.000  1.0
  Ti  Ti12  1  0.998  0.885  0.117  1.0
  Ti  Ti13  1  0.500  0.750  0.253  1.0
  Si  Si14  1  0.999  0.381  0.617  1.0
  Si  Si15  1  0.001  0.619  0.383  1.0
  O  O16  1  0.665  0.557  0.654  1.0
  O  O17  1  0.335  0.183  0.600  1.0
  O  O18  1  0.380  0.912  0.840  1.0
  O  O19  1  0.881  0.079  0.705  1.0
  O  O20  1  0.119  0.453  0.759  1.0
  O  O21  1  0.872  0.773  0.966  1.0
  O  O22  1  0.621  0.337  0.902  1.0
  O  O23  1  0.128  0.227  0.034  1.0
  O  O24  1  0.379  0.663  0.098  1.0
  O  O25  1  0.881  0.547  0.241  1.0
  O  O26  1  0.620  0.088  0.160  1.0
  O  O27  1  0.335  0.443  0.346  1.0
  O  O28  1  0.665  0.817  0.400  1.0
  O  O29  1  0.119  0.921  0.295  1.0
  O  O30  1  0.102  0.678  0.526  1.0
  O  O31  1  0.898  0.322  0.474  1.0
[/CIF]
.