The crystal structure described by Li2TiNi2O5 is Caswellsilverite-derived structured and crystallizes in the monoclinic C2 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form LiO6 octahedra that share corners with two equivalent Li(4)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Ni(4)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra,  an edgeedge with one Ni(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, edges with two equivalent Ni(1)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the second Li site, Li(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form LiO6 octahedra that share corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-11°. In the third Li site, Li(3) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form LiO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with two equivalent Li(4)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and edges with two equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-11°. In the fourth Li site, Li(4) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form LiO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and edges with two equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-6°. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form TiO6 octahedra that share corners with two equivalent Li(4)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and edges with two equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-2°. In the second Ti site, Ti(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form TiO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form NiO6 octahedra that share corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and edges with two equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-11°. In the second Ni site, Ni(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form NiO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra, corners with two equivalent Ni(4)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Ni(3)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, and edges with two equivalent Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-11°. In the third Ni site, Ni(3) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form NiO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Ni(4)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with two equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-8°. In the fourth Ni site, Ni(4) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form NiO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with two equivalent Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-9°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(3), one Ti(2), one Ni(1), one Ni(3), and one Ni(4) atom to form OLi2TiNi3 octahedra that share corners with two equivalent O(1)Li2TiNi3 octahedra, corners with two equivalent O(3)Li2TiNi3 octahedra, corners with two equivalent O(5)Li3Ti2Ni octahedra,  an edgeedge with one O(3)Li2TiNi3 octahedra,  an edgeedge with one O(5)Li3Ti2Ni octahedra, edges with two equivalent O(1)Li2TiNi3 octahedra, edges with four equivalent O(4)Li2TiNi3 octahedra, and edges with four equivalent O(2)Li3TiNi2 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Li(3), one Ti(2), one Ni(1), and one Ni(2) atom to form OLi3TiNi2 octahedra that share corners with two equivalent O(3)Li2TiNi3 octahedra, corners with two equivalent O(4)Li2TiNi3 octahedra, corners with two equivalent O(2)Li3TiNi2 octahedra,  an edgeedge with one O(3)Li2TiNi3 octahedra,  an edgeedge with one O(4)Li2TiNi3 octahedra, edges with two equivalent O(2)Li3TiNi2 octahedra, edges with four equivalent O(1)Li2TiNi3 octahedra, and edges with four equivalent O(5)Li3Ti2Ni octahedra. The corner-sharing octahedral tilt angles range from 1-10°. In the third O site, O(3) is bonded to one Li(2), one Li(4), one Ti(1), one Ni(2), one Ni(3), and one Ni(4) atom to form OLi2TiNi3 octahedra that share corners with two equivalent O(1)Li2TiNi3 octahedra, corners with two equivalent O(3)Li2TiNi3 octahedra, corners with two equivalent O(2)Li3TiNi2 octahedra,  an edgeedge with one O(1)Li2TiNi3 octahedra,  an edgeedge with one O(2)Li3TiNi2 octahedra, edges with two equivalent O(3)Li2TiNi3 octahedra, edges with four equivalent O(4)Li2TiNi3 octahedra, and edges with four equivalent O(5)Li3Ti2Ni octahedra. The corner-sharing octahedral tilt angles range from 1-10°. In the fourth O site, O(4) is bonded to one Li(3), one Li(4), one Ti(1), one Ni(1), one Ni(3), and one Ni(4) atom to form OLi2TiNi3 octahedra that share corners with two equivalent O(4)Li2TiNi3 octahedra, corners with two equivalent O(5)Li3Ti2Ni octahedra, corners with two equivalent O(2)Li3TiNi2 octahedra,  an edgeedge with one O(5)Li3Ti2Ni octahedra,  an edgeedge with one O(2)Li3TiNi2 octahedra, edges with two equivalent O(4)Li2TiNi3 octahedra, edges with four equivalent O(1)Li2TiNi3 octahedra, and edges with four equivalent O(3)Li2TiNi3 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. In the fifth O site, O(5) is bonded to one Li(1), one Li(2), one Li(4), one Ti(1), one Ti(2), and one Ni(2) atom to form OLi3Ti2Ni octahedra that share corners with two equivalent O(1)Li2TiNi3 octahedra, corners with two equivalent O(4)Li2TiNi3 octahedra, corners with two equivalent O(5)Li3Ti2Ni octahedra,  an edgeedge with one O(1)Li2TiNi3 octahedra,  an edgeedge with one O(4)Li2TiNi3 octahedra, edges with two equivalent O(5)Li3Ti2Ni octahedra, edges with four equivalent O(3)Li2TiNi3 octahedra, and edges with four equivalent O(2)Li3TiNi2 octahedra. The corner-sharing octahedral tilt angles range from 1-4°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2TiNi2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.720
_cell_length_b   7.720
_cell_length_c   5.183
_cell_angle_alpha   83.059
_cell_angle_beta   83.059
_cell_angle_gamma   141.019
_symmetry_Int_Tables_number   1
_cell_volume   181.120
_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  0.302  0.698  0.000  1.0
  Li  Li1  1  0.202  0.798  0.500  1.0
  Li  Li2  1  0.897  0.103  0.000  1.0
  Li  Li3  1  0.600  0.400  0.500  1.0
  Ti  Ti4  1  0.100  0.900  0.000  1.0
  Ti  Ti5  1  0.799  0.201  0.500  1.0
  Ni  Ni6  1  0.400  0.600  0.500  1.0
  Ni  Ni7  1  0.702  0.298  0.000  1.0
  Ni  Ni8  1  0.496  0.504  0.000  1.0
  Ni  Ni9  1  0.001  0.999  0.500  1.0
  O  O10  1  0.649  0.855  0.735  1.0
  O  O11  1  0.572  0.972  0.273  1.0
  O  O12  1  0.863  0.666  0.772  1.0
  O  O13  1  0.028  0.428  0.727  1.0
  O  O14  1  0.145  0.351  0.265  1.0
  O  O15  1  0.764  0.753  0.241  1.0
  O  O16  1  0.949  0.548  0.244  1.0
  O  O17  1  0.247  0.236  0.759  1.0
  O  O18  1  0.452  0.051  0.756  1.0
  O  O19  1  0.334  0.137  0.228  1.0
[/CIF]
.
The crystal structure described by Li2TiNi2O5 is Caswellsilverite-derived structured and crystallizes in the monoclinic C2 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form LiO6 octahedra that share corners with two equivalent Li(4)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Ni(4)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra,  an edgeedge with one Ni(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, edges with two equivalent Ni(1)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the second Li site, Li(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form LiO6 octahedra that share corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-11°. In the third Li site, Li(3) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form LiO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with two equivalent Li(4)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one Ti(1)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and edges with two equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-11°. In the fourth Li site, Li(4) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form LiO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and edges with two equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-6°. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form TiO6 octahedra that share corners with two equivalent Li(4)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ni(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and edges with two equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-2°. In the second Ti site, Ti(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form TiO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Ni(4)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with two equivalent Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-4°. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form NiO6 octahedra that share corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Ti(1)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Ti(2)O6 octahedra, edges with two equivalent Ni(3)O6 octahedra, and edges with two equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-11°. In the second Ni site, Ni(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form NiO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with two equivalent Ni(1)O6 octahedra, corners with two equivalent Ni(4)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Ni(3)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, and edges with two equivalent Ti(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-11°. In the third Ni site, Ni(3) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form NiO6 octahedra that share corners with two equivalent Li(2)O6 octahedra, corners with two equivalent Ti(2)O6 octahedra, corners with two equivalent Ni(4)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Ni(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with two equivalent Ni(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-8°. In the fourth Ni site, Ni(4) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form NiO6 octahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Ni(2)O6 octahedra, corners with two equivalent Ni(3)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Ti(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with two equivalent Ti(1)O6 octahedra, edges with two equivalent Ni(1)O6 octahedra, and edges with two equivalent Ni(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-9°. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(3), one Ti(2), one Ni(1), one Ni(3), and one Ni(4) atom to form OLi2TiNi3 octahedra that share corners with two equivalent O(1)Li2TiNi3 octahedra, corners with two equivalent O(3)Li2TiNi3 octahedra, corners with two equivalent O(5)Li3Ti2Ni octahedra,  an edgeedge with one O(3)Li2TiNi3 octahedra,  an edgeedge with one O(5)Li3Ti2Ni octahedra, edges with two equivalent O(1)Li2TiNi3 octahedra, edges with four equivalent O(4)Li2TiNi3 octahedra, and edges with four equivalent O(2)Li3TiNi2 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Li(3), one Ti(2), one Ni(1), and one Ni(2) atom to form OLi3TiNi2 octahedra that share corners with two equivalent O(3)Li2TiNi3 octahedra, corners with two equivalent O(4)Li2TiNi3 octahedra, corners with two equivalent O(2)Li3TiNi2 octahedra,  an edgeedge with one O(3)Li2TiNi3 octahedra,  an edgeedge with one O(4)Li2TiNi3 octahedra, edges with two equivalent O(2)Li3TiNi2 octahedra, edges with four equivalent O(1)Li2TiNi3 octahedra, and edges with four equivalent O(5)Li3Ti2Ni octahedra. The corner-sharing octahedral tilt angles range from 1-10°. In the third O site, O(3) is bonded to one Li(2), one Li(4), one Ti(1), one Ni(2), one Ni(3), and one Ni(4) atom to form OLi2TiNi3 octahedra that share corners with two equivalent O(1)Li2TiNi3 octahedra, corners with two equivalent O(3)Li2TiNi3 octahedra, corners with two equivalent O(2)Li3TiNi2 octahedra,  an edgeedge with one O(1)Li2TiNi3 octahedra,  an edgeedge with one O(2)Li3TiNi2 octahedra, edges with two equivalent O(3)Li2TiNi3 octahedra, edges with four equivalent O(4)Li2TiNi3 octahedra, and edges with four equivalent O(5)Li3Ti2Ni octahedra. The corner-sharing octahedral tilt angles range from 1-10°. In the fourth O site, O(4) is bonded to one Li(3), one Li(4), one Ti(1), one Ni(1), one Ni(3), and one Ni(4) atom to form OLi2TiNi3 octahedra that share corners with two equivalent O(4)Li2TiNi3 octahedra, corners with two equivalent O(5)Li3Ti2Ni octahedra, corners with two equivalent O(2)Li3TiNi2 octahedra,  an edgeedge with one O(5)Li3Ti2Ni octahedra,  an edgeedge with one O(2)Li3TiNi2 octahedra, edges with two equivalent O(4)Li2TiNi3 octahedra, edges with four equivalent O(1)Li2TiNi3 octahedra, and edges with four equivalent O(3)Li2TiNi3 octahedra. The corner-sharing octahedral tilt angles range from 1-7°. In the fifth O site, O(5) is bonded to one Li(1), one Li(2), one Li(4), one Ti(1), one Ti(2), and one Ni(2) atom to form OLi3Ti2Ni octahedra that share corners with two equivalent O(1)Li2TiNi3 octahedra, corners with two equivalent O(4)Li2TiNi3 octahedra, corners with two equivalent O(5)Li3Ti2Ni octahedra,  an edgeedge with one O(1)Li2TiNi3 octahedra,  an edgeedge with one O(4)Li2TiNi3 octahedra, edges with two equivalent O(5)Li3Ti2Ni octahedra, edges with four equivalent O(3)Li2TiNi3 octahedra, and edges with four equivalent O(2)Li3TiNi2 octahedra. The corner-sharing octahedral tilt angles range from 1-4°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2TiNi2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.720
_cell_length_b   7.720
_cell_length_c   5.183
_cell_angle_alpha   83.059
_cell_angle_beta   83.059
_cell_angle_gamma   141.019
_symmetry_Int_Tables_number   1
_cell_volume   181.120
_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  0.302  0.698  0.000  1.0
  Li  Li1  1  0.202  0.798  0.500  1.0
  Li  Li2  1  0.897  0.103  0.000  1.0
  Li  Li3  1  0.600  0.400  0.500  1.0
  Ti  Ti4  1  0.100  0.900  0.000  1.0
  Ti  Ti5  1  0.799  0.201  0.500  1.0
  Ni  Ni6  1  0.400  0.600  0.500  1.0
  Ni  Ni7  1  0.702  0.298  0.000  1.0
  Ni  Ni8  1  0.496  0.504  0.000  1.0
  Ni  Ni9  1  0.001  0.999  0.500  1.0
  O  O10  1  0.649  0.855  0.735  1.0
  O  O11  1  0.572  0.972  0.273  1.0
  O  O12  1  0.863  0.666  0.772  1.0
  O  O13  1  0.028  0.428  0.727  1.0
  O  O14  1  0.145  0.351  0.265  1.0
  O  O15  1  0.764  0.753  0.241  1.0
  O  O16  1  0.949  0.548  0.244  1.0
  O  O17  1  0.247  0.236  0.759  1.0
  O  O18  1  0.452  0.051  0.756  1.0
  O  O19  1  0.334  0.137  0.228  1.0
[/CIF]
.