Li2Ni3Si2O8 crystallizes in the triclinic P1 space group. There are six inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(11), one O(17), one O(18), one O(2), one O(3), and one O(7) atom to form distorted LiO6 octahedra that share  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(5)O4 tetrahedra,  a cornercorner with one Ni(6)O4 tetrahedra,  a cornercorner with one Ni(8)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(5)O4 tetrahedra,  an edgeedge with one Ni(5)O4 tetrahedra, and  an edgeedge with one Ni(8)O4 tetrahedra. In the second Li site, Li(2) is bonded in a distorted see-saw-like geometry to one O(1), one O(10), one O(17), and one O(7) atom. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(16), one O(21), and one O(6) atom. In the fourth Li site, Li(4) is bonded in a distorted see-saw-like geometry to one O(11), one O(19), one O(3), and one O(5) atom. In the fifth Li site, Li(5) is bonded to one O(16), one O(21), one O(6), and one O(9) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Ni(3)O4 tetrahedra,  a cornercorner with one Ni(9)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, corners with two equivalent Ni(2)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 79°. In the sixth Li site, Li(6) is bonded to one O(13), one O(19), one O(22), one O(24), one O(5), and one O(9) atom to form distorted LiO6 octahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra,  a cornercorner with one Ni(7)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra,  an edgeedge with one Ni(1)O4 tetrahedra,  an edgeedge with one Ni(3)O4 tetrahedra, and  an edgeedge with one Ni(6)O4 tetrahedra. There are nine inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(15), one O(19), one O(24), and one O(5) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Ni(5)O4 tetrahedra,  a cornercorner with one Ni(7)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Li(6)O6 octahedra. The corner-sharing octahedral tilt angles are 83°. In the second Ni site, Ni(2) is bonded to one O(16), one O(2), one O(6), and one O(8) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Ni(4)O4 tetrahedra,  a cornercorner with one Ni(8)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, and corners with two equivalent Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 86°. In the third Ni site, Ni(3) is bonded to one O(13), one O(14), one O(22), and one O(9) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Ni(4)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Ni(6)O4 tetrahedra, corners with two equivalent Si(6)O4 tetrahedra, and  an edgeedge with one Li(6)O6 octahedra. The corner-sharing octahedral tilt angles are 82°. In the fourth Ni site, Ni(4) is bonded to one O(12), one O(14), one O(23), and one O(8) atom to form NiO4 tetrahedra that share  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Ni(7)O4 tetrahedra, and corners with two equivalent Si(6)O4 tetrahedra. In the fifth Ni site, Ni(5) is bonded to one O(15), one O(17), one O(18), and one O(7) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(6)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Li(1)O6 octahedra. The corner-sharing octahedral tilt angles are 83°. In the sixth Ni site, Ni(6) is bonded to one O(13), one O(18), one O(20), and one O(22) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Ni(5)O4 tetrahedra,  a cornercorner with one Ni(7)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Li(6)O6 octahedra. The corner-sharing octahedral tilt angles are 84°. In the seventh Ni site, Ni(7) is bonded to one O(12), one O(20), one O(23), and one O(24) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(6)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, corners with two equivalent Ni(4)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 81°. In the eighth Ni site, Ni(8) is bonded to one O(11), one O(2), one O(3), and one O(4) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(9)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Li(1)O6 octahedra. The corner-sharing octahedral tilt angles are 86°. In the ninth Ni site, Ni(9) is bonded to one O(1), one O(10), one O(21), and one O(4) atom to form distorted NiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Ni(8)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, and corners with two equivalent Si(4)O4 tetrahedra. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(13), one O(18), one O(19), and one O(3) atom to form SiO4 tetrahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(6)O6 octahedra,  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra,  a cornercorner with one Ni(5)O4 tetrahedra,  a cornercorner with one Ni(8)O4 tetrahedra, and corners with two equivalent Ni(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-66°. In the second Si site, Si(2) is bonded to one O(15), one O(20), one O(5), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Ni(6)O4 tetrahedra,  a cornercorner with one Ni(7)O4 tetrahedra, corners with two equivalent Ni(1)O4 tetrahedra, and corners with two equivalent Ni(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-57°. In the third Si site, Si(3) is bonded to one O(12), one O(24), one O(6), and one O(9) atom to form SiO4 tetrahedra that share corners with two equivalent Li(6)O6 octahedra,  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra,  a cornercorner with one Ni(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, and corners with two equivalent Ni(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-53°. In the fourth Si site, Si(4) is bonded to one O(10), one O(11), one O(4), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(4)O4 tetrahedra, corners with two equivalent Ni(8)O4 tetrahedra, and corners with two equivalent Ni(9)O4 tetrahedra. The corner-sharing octahedral tilt angles are 59°. In the fifth Si site, Si(5) is bonded to one O(1), one O(16), one O(17), and one O(2) atom to form SiO4 tetrahedra that share corners with two equivalent Li(1)O6 octahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Ni(5)O4 tetrahedra,  a cornercorner with one Ni(8)O4 tetrahedra,  a cornercorner with one Ni(9)O4 tetrahedra, and corners with two equivalent Ni(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 45-66°. In the sixth Si site, Si(6) is bonded to one O(14), one O(21), one O(22), and one O(23) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Ni(6)O4 tetrahedra,  a cornercorner with one Ni(7)O4 tetrahedra,  a cornercorner with one Ni(9)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, and corners with two equivalent Ni(4)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Li(2), one Li(3), one Ni(9), and one Si(5) atom to form distorted OLi2SiNi trigonal pyramids that share  a cornercorner with one O(10)Li2SiNi tetrahedra,  a cornercorner with one O(2)LiSiNi2 tetrahedra, corners with two equivalent O(16)Li2SiNi tetrahedra,  an edgeedge with one O(10)Li2SiNi tetrahedra, and  an edgeedge with one O(21)Li2SiNi tetrahedra. In the second O site, O(2) is bonded to one Li(1), one Ni(2), one Ni(8), and one Si(5) atom to form distorted OLiSiNi2 tetrahedra that share  a cornercorner with one O(18)LiSiNi2 tetrahedra, corners with two equivalent O(16)Li2SiNi tetrahedra,  a cornercorner with one O(1)Li2SiNi trigonal pyramid, and  an edgeedge with one O(3)Li2SiNi tetrahedra. In the third O site, O(3) is bonded to one Li(1), one Li(4), one Ni(8), and one Si(1) atom to form distorted OLi2SiNi tetrahedra that share corners with two equivalent O(18)LiSiNi2 tetrahedra,  a cornercorner with one O(13)LiSiNi2 trigonal pyramid, corners with two equivalent O(19)Li2SiNi trigonal pyramids, and  an edgeedge with one O(2)LiSiNi2 tetrahedra. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ni(8), one Ni(9), and one Si(4) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Li(4), one Li(6), one Ni(1), and one Si(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Li(3), one Li(5), one Ni(2), and one Si(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Li(1), one Li(2), one Ni(5), and one Si(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Ni(2), one Ni(4), and one Si(4) atom. In the ninth O site, O(9) is bonded to one Li(5), one Li(6), one Ni(3), and one Si(3) atom to form OLi2SiNi tetrahedra that share  a cornercorner with one O(16)Li2SiNi tetrahedra,  a cornercorner with one O(21)Li2SiNi tetrahedra, corners with two equivalent O(22)LiSiNi2 tetrahedra, corners with two equivalent O(24)LiSiNi2 tetrahedra,  a cornercorner with one O(19)Li2SiNi trigonal pyramid, and  an edgeedge with one O(13)LiSiNi2 trigonal pyramid. In the tenth O site, O(10) is bonded to one Li(2), one Li(3), one Ni(9), and one Si(4) atom to form a mixture of distorted edge and corner-sharing OLi2SiNi tetrahedra. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Li(1), one Li(4), one Ni(8), and one Si(4) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Ni(4), one Ni(7), and one Si(3) atom. In the thirteenth O site, O(13) is bonded to one Li(6), one Ni(3), one Ni(6), and one Si(1) atom to form distorted OLiSiNi2 trigonal pyramids that share  a cornercorner with one O(3)Li2SiNi tetrahedra,  a cornercorner with one O(22)LiSiNi2 tetrahedra,  a cornercorner with one O(24)LiSiNi2 tetrahedra, corners with two equivalent O(18)LiSiNi2 tetrahedra, corners with two equivalent O(19)Li2SiNi trigonal pyramids,  an edgeedge with one O(9)Li2SiNi tetrahedra, and  an edgeedge with one O(22)LiSiNi2 tetrahedra. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to one Ni(3), one Ni(4), and one Si(6) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Ni(1), one Ni(5), and one Si(2) atom. In the sixteenth O site, O(16) is bonded to one Li(3), one Li(5), one Ni(2), and one Si(5) atom to form distorted OLi2SiNi tetrahedra that share  a cornercorner with one O(10)Li2SiNi tetrahedra,  a cornercorner with one O(9)Li2SiNi tetrahedra, corners with two equivalent O(21)Li2SiNi tetrahedra, corners with two equivalent O(2)LiSiNi2 tetrahedra, and corners with two equivalent O(1)Li2SiNi trigonal pyramids. In the seventeenth O site, O(17) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Li(2), one Ni(5), and one Si(5) atom. In the eighteenth O site, O(18) is bonded to one Li(1), one Ni(5), one Ni(6), and one Si(1) atom to form distorted OLiSiNi2 tetrahedra that share  a cornercorner with one O(2)LiSiNi2 tetrahedra,  a cornercorner with one O(22)LiSiNi2 tetrahedra, corners with two equivalent O(3)Li2SiNi tetrahedra,  a cornercorner with one O(19)Li2SiNi trigonal pyramid, and corners with two equivalent O(13)LiSiNi2 trigonal pyramids. In the nineteenth O site, O(19) is bonded to one Li(4), one Li(6), one Ni(1), and one Si(1) atom to form distorted OLi2SiNi trigonal pyramids that share  a cornercorner with one O(9)Li2SiNi tetrahedra,  a cornercorner with one O(18)LiSiNi2 tetrahedra,  a cornercorner with one O(22)LiSiNi2 tetrahedra, corners with two equivalent O(3)Li2SiNi tetrahedra, corners with two equivalent O(13)LiSiNi2 trigonal pyramids, and  an edgeedge with one O(24)LiSiNi2 tetrahedra. In the twentieth O site, O(20) is bonded in a trigonal planar geometry to one Ni(6), one Ni(7), and one Si(2) atom. In the twenty-first O site, O(21) is bonded to one Li(3), one Li(5), one Ni(9), and one Si(6) atom to form distorted OLi2SiNi tetrahedra that share  a cornercorner with one O(9)Li2SiNi tetrahedra,  a cornercorner with one O(22)LiSiNi2 tetrahedra, corners with two equivalent O(10)Li2SiNi tetrahedra, corners with two equivalent O(16)Li2SiNi tetrahedra, and  an edgeedge with one O(1)Li2SiNi trigonal pyramid. In the twenty-second O site, O(22) is bonded to one Li(6), one Ni(3), one Ni(6), and one Si(6) atom to form distorted OLiSiNi2 tetrahedra that share  a cornercorner with one O(21)Li2SiNi tetrahedra,  a cornercorner with one O(18)LiSiNi2 tetrahedra,  a cornercorner with one O(24)LiSiNi2 tetrahedra, corners with two equivalent O(9)Li2SiNi tetrahedra,  a cornercorner with one O(19)Li2SiNi trigonal pyramid,  a cornercorner with one O(13)LiSiNi2 trigonal pyramid, and  an edgeedge with one O(13)LiSiNi2 trigonal pyramid. In the twenty-third O site, O(23) is bonded in a trigonal planar geometry to one Ni(4), one Ni(7), and one Si(6) atom. In the twenty-fourth O site, O(24) is bonded to one Li(6), one Ni(1), one Ni(7), and one Si(3) atom to form distorted OLiSiNi2 tetrahedra that share  a cornercorner with one O(22)LiSiNi2 tetrahedra, corners with two equivalent O(9)Li2SiNi tetrahedra,  a cornercorner with one O(13)LiSiNi2 trigonal pyramid, and  an edgeedge with one O(19)Li2SiNi trigonal pyramid.
Li2Ni3Si2O8 crystallizes in the triclinic P1 space group. There are six inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(11), one O(17), one O(18), one O(2), one O(3), and one O(7) atom to form distorted LiO6 octahedra that share  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(5)O4 tetrahedra,  a cornercorner with one Ni(6)O4 tetrahedra,  a cornercorner with one Ni(8)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(5)O4 tetrahedra,  an edgeedge with one Ni(5)O4 tetrahedra, and  an edgeedge with one Ni(8)O4 tetrahedra. The Li(1)-O(11) bond length is 2.49 Å. The Li(1)-O(17) bond length is 2.10 Å. The Li(1)-O(18) bond length is 2.35 Å. The Li(1)-O(2) bond length is 2.47 Å. The Li(1)-O(3) bond length is 2.13 Å. The Li(1)-O(7) bond length is 2.49 Å. In the second Li site, Li(2) is bonded in a distorted see-saw-like geometry to one O(1), one O(10), one O(17), and one O(7) atom. The Li(2)-O(1) bond length is 1.95 Å. The Li(2)-O(10) bond length is 2.27 Å. The Li(2)-O(17) bond length is 2.04 Å. The Li(2)-O(7) bond length is 2.07 Å. In the third Li site, Li(3) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(16), one O(21), and one O(6) atom. The Li(3)-O(1) bond length is 2.08 Å. The Li(3)-O(10) bond length is 2.14 Å. The Li(3)-O(16) bond length is 2.16 Å. The Li(3)-O(21) bond length is 2.05 Å. The Li(3)-O(6) bond length is 2.57 Å. In the fourth Li site, Li(4) is bonded in a distorted see-saw-like geometry to one O(11), one O(19), one O(3), and one O(5) atom. The Li(4)-O(11) bond length is 2.02 Å. The Li(4)-O(19) bond length is 2.01 Å. The Li(4)-O(3) bond length is 2.08 Å. The Li(4)-O(5) bond length is 2.12 Å. In the fifth Li site, Li(5) is bonded to one O(16), one O(21), one O(6), and one O(9) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Ni(3)O4 tetrahedra,  a cornercorner with one Ni(9)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, corners with two equivalent Ni(2)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 79°. The Li(5)-O(16) bond length is 1.99 Å. The Li(5)-O(21) bond length is 2.16 Å. The Li(5)-O(6) bond length is 1.94 Å. The Li(5)-O(9) bond length is 2.07 Å. In the sixth Li site, Li(6) is bonded to one O(13), one O(19), one O(22), one O(24), one O(5), and one O(9) atom to form distorted LiO6 octahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra,  a cornercorner with one Ni(7)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra,  an edgeedge with one Ni(1)O4 tetrahedra,  an edgeedge with one Ni(3)O4 tetrahedra, and  an edgeedge with one Ni(6)O4 tetrahedra. The Li(6)-O(13) bond length is 2.33 Å. The Li(6)-O(19) bond length is 2.21 Å. The Li(6)-O(22) bond length is 2.41 Å. The Li(6)-O(24) bond length is 2.16 Å. The Li(6)-O(5) bond length is 2.36 Å. The Li(6)-O(9) bond length is 2.16 Å. There are nine inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(15), one O(19), one O(24), and one O(5) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Ni(5)O4 tetrahedra,  a cornercorner with one Ni(7)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Li(6)O6 octahedra. The corner-sharing octahedral tilt angles are 83°. The Ni(1)-O(15) bond length is 1.96 Å. The Ni(1)-O(19) bond length is 1.97 Å. The Ni(1)-O(24) bond length is 2.02 Å. The Ni(1)-O(5) bond length is 1.94 Å. In the second Ni site, Ni(2) is bonded to one O(16), one O(2), one O(6), and one O(8) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Ni(4)O4 tetrahedra,  a cornercorner with one Ni(8)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, and corners with two equivalent Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 86°. The Ni(2)-O(16) bond length is 1.99 Å. The Ni(2)-O(2) bond length is 2.00 Å. The Ni(2)-O(6) bond length is 1.98 Å. The Ni(2)-O(8) bond length is 1.97 Å. In the third Ni site, Ni(3) is bonded to one O(13), one O(14), one O(22), and one O(9) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Ni(4)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, corners with two equivalent Ni(6)O4 tetrahedra, corners with two equivalent Si(6)O4 tetrahedra, and  an edgeedge with one Li(6)O6 octahedra. The corner-sharing octahedral tilt angles are 82°. The Ni(3)-O(13) bond length is 1.97 Å. The Ni(3)-O(14) bond length is 1.95 Å. The Ni(3)-O(22) bond length is 1.97 Å. The Ni(3)-O(9) bond length is 1.97 Å. In the fourth Ni site, Ni(4) is bonded to one O(12), one O(14), one O(23), and one O(8) atom to form NiO4 tetrahedra that share  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Ni(7)O4 tetrahedra, and corners with two equivalent Si(6)O4 tetrahedra. The Ni(4)-O(12) bond length is 1.96 Å. The Ni(4)-O(14) bond length is 1.98 Å. The Ni(4)-O(23) bond length is 1.99 Å. The Ni(4)-O(8) bond length is 1.96 Å. In the fifth Ni site, Ni(5) is bonded to one O(15), one O(17), one O(18), and one O(7) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(6)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one Li(1)O6 octahedra. The corner-sharing octahedral tilt angles are 83°. The Ni(5)-O(15) bond length is 1.97 Å. The Ni(5)-O(17) bond length is 1.97 Å. The Ni(5)-O(18) bond length is 2.00 Å. The Ni(5)-O(7) bond length is 1.94 Å. In the sixth Ni site, Ni(6) is bonded to one O(13), one O(18), one O(20), and one O(22) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Ni(5)O4 tetrahedra,  a cornercorner with one Ni(7)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and  an edgeedge with one Li(6)O6 octahedra. The corner-sharing octahedral tilt angles are 84°. The Ni(6)-O(13) bond length is 1.98 Å. The Ni(6)-O(18) bond length is 1.98 Å. The Ni(6)-O(20) bond length is 1.97 Å. The Ni(6)-O(22) bond length is 1.99 Å. In the seventh Ni site, Ni(7) is bonded to one O(12), one O(20), one O(23), and one O(24) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(6)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, corners with two equivalent Ni(4)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 81°. The Ni(7)-O(12) bond length is 1.95 Å. The Ni(7)-O(20) bond length is 1.99 Å. The Ni(7)-O(23) bond length is 1.98 Å. The Ni(7)-O(24) bond length is 2.05 Å. In the eighth Ni site, Ni(8) is bonded to one O(11), one O(2), one O(3), and one O(4) atom to form NiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(9)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and  an edgeedge with one Li(1)O6 octahedra. The corner-sharing octahedral tilt angles are 86°. The Ni(8)-O(11) bond length is 1.95 Å. The Ni(8)-O(2) bond length is 1.99 Å. The Ni(8)-O(3) bond length is 2.00 Å. The Ni(8)-O(4) bond length is 1.96 Å. In the ninth Ni site, Ni(9) is bonded to one O(1), one O(10), one O(21), and one O(4) atom to form distorted NiO4 tetrahedra that share  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Ni(8)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, and corners with two equivalent Si(4)O4 tetrahedra. The Ni(9)-O(1) bond length is 1.97 Å. The Ni(9)-O(10) bond length is 1.96 Å. The Ni(9)-O(21) bond length is 2.01 Å. The Ni(9)-O(4) bond length is 1.97 Å. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(13), one O(18), one O(19), and one O(3) atom to form SiO4 tetrahedra that share corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(6)O6 octahedra,  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra,  a cornercorner with one Ni(5)O4 tetrahedra,  a cornercorner with one Ni(8)O4 tetrahedra, and corners with two equivalent Ni(6)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-66°. The Si(1)-O(13) bond length is 1.66 Å. The Si(1)-O(18) bond length is 1.67 Å. The Si(1)-O(19) bond length is 1.64 Å. The Si(1)-O(3) bond length is 1.64 Å. In the second Si site, Si(2) is bonded to one O(15), one O(20), one O(5), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Ni(6)O4 tetrahedra,  a cornercorner with one Ni(7)O4 tetrahedra, corners with two equivalent Ni(1)O4 tetrahedra, and corners with two equivalent Ni(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-57°. The Si(2)-O(15) bond length is 1.64 Å. The Si(2)-O(20) bond length is 1.66 Å. The Si(2)-O(5) bond length is 1.65 Å. The Si(2)-O(7) bond length is 1.64 Å. In the third Si site, Si(3) is bonded to one O(12), one O(24), one O(6), and one O(9) atom to form SiO4 tetrahedra that share corners with two equivalent Li(6)O6 octahedra,  a cornercorner with one Ni(1)O4 tetrahedra,  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(3)O4 tetrahedra,  a cornercorner with one Ni(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra, and corners with two equivalent Ni(7)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-53°. The Si(3)-O(12) bond length is 1.64 Å. The Si(3)-O(24) bond length is 1.69 Å. The Si(3)-O(6) bond length is 1.63 Å. The Si(3)-O(9) bond length is 1.66 Å. In the fourth Si site, Si(4) is bonded to one O(10), one O(11), one O(4), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Ni(2)O4 tetrahedra,  a cornercorner with one Ni(4)O4 tetrahedra, corners with two equivalent Ni(8)O4 tetrahedra, and corners with two equivalent Ni(9)O4 tetrahedra. The corner-sharing octahedral tilt angles are 59°. The Si(4)-O(10) bond length is 1.65 Å. The Si(4)-O(11) bond length is 1.65 Å. The Si(4)-O(4) bond length is 1.64 Å. The Si(4)-O(8) bond length is 1.65 Å. In the fifth Si site, Si(5) is bonded to one O(1), one O(16), one O(17), and one O(2) atom to form SiO4 tetrahedra that share corners with two equivalent Li(1)O6 octahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Ni(5)O4 tetrahedra,  a cornercorner with one Ni(8)O4 tetrahedra,  a cornercorner with one Ni(9)O4 tetrahedra, and corners with two equivalent Ni(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 45-66°. The Si(5)-O(1) bond length is 1.64 Å. The Si(5)-O(16) bond length is 1.66 Å. The Si(5)-O(17) bond length is 1.65 Å. The Si(5)-O(2) bond length is 1.67 Å. In the sixth Si site, Si(6) is bonded to one O(14), one O(21), one O(22), and one O(23) atom to form SiO4 tetrahedra that share  a cornercorner with one Li(6)O6 octahedra,  a cornercorner with one Li(5)O4 tetrahedra,  a cornercorner with one Ni(6)O4 tetrahedra,  a cornercorner with one Ni(7)O4 tetrahedra,  a cornercorner with one Ni(9)O4 tetrahedra, corners with two equivalent Ni(3)O4 tetrahedra, and corners with two equivalent Ni(4)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. The Si(6)-O(14) bond length is 1.65 Å. The Si(6)-O(21) bond length is 1.64 Å. The Si(6)-O(22) bond length is 1.67 Å. The Si(6)-O(23) bond length is 1.63 Å. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Li(2), one Li(3), one Ni(9), and one Si(5) atom to form distorted OLi2SiNi trigonal pyramids that share  a cornercorner with one O(10)Li2SiNi tetrahedra,  a cornercorner with one O(2)LiSiNi2 tetrahedra, corners with two equivalent O(16)Li2SiNi tetrahedra,  an edgeedge with one O(10)Li2SiNi tetrahedra, and  an edgeedge with one O(21)Li2SiNi tetrahedra. In the second O site, O(2) is bonded to one Li(1), one Ni(2), one Ni(8), and one Si(5) atom to form distorted OLiSiNi2 tetrahedra that share  a cornercorner with one O(18)LiSiNi2 tetrahedra, corners with two equivalent O(16)Li2SiNi tetrahedra,  a cornercorner with one O(1)Li2SiNi trigonal pyramid, and  an edgeedge with one O(3)Li2SiNi tetrahedra. In the third O site, O(3) is bonded to one Li(1), one Li(4), one Ni(8), and one Si(1) atom to form distorted OLi2SiNi tetrahedra that share corners with two equivalent O(18)LiSiNi2 tetrahedra,  a cornercorner with one O(13)LiSiNi2 trigonal pyramid, corners with two equivalent O(19)Li2SiNi trigonal pyramids, and  an edgeedge with one O(2)LiSiNi2 tetrahedra. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ni(8), one Ni(9), and one Si(4) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Li(4), one Li(6), one Ni(1), and one Si(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Li(3), one Li(5), one Ni(2), and one Si(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Li(1), one Li(2), one Ni(5), and one Si(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Ni(2), one Ni(4), and one Si(4) atom. In the ninth O site, O(9) is bonded to one Li(5), one Li(6), one Ni(3), and one Si(3) atom to form OLi2SiNi tetrahedra that share  a cornercorner with one O(16)Li2SiNi tetrahedra,  a cornercorner with one O(21)Li2SiNi tetrahedra, corners with two equivalent O(22)LiSiNi2 tetrahedra, corners with two equivalent O(24)LiSiNi2 tetrahedra,  a cornercorner with one O(19)Li2SiNi trigonal pyramid, and  an edgeedge with one O(13)LiSiNi2 trigonal pyramid. In the tenth O site, O(10) is bonded to one Li(2), one Li(3), one Ni(9), and one Si(4) atom to form a mixture of distorted edge and corner-sharing OLi2SiNi tetrahedra. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Li(1), one Li(4), one Ni(8), and one Si(4) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Ni(4), one Ni(7), and one Si(3) atom. In the thirteenth O site, O(13) is bonded to one Li(6), one Ni(3), one Ni(6), and one Si(1) atom to form distorted OLiSiNi2 trigonal pyramids that share  a cornercorner with one O(3)Li2SiNi tetrahedra,  a cornercorner with one O(22)LiSiNi2 tetrahedra,  a cornercorner with one O(24)LiSiNi2 tetrahedra, corners with two equivalent O(18)LiSiNi2 tetrahedra, corners with two equivalent O(19)Li2SiNi trigonal pyramids,  an edgeedge with one O(9)Li2SiNi tetrahedra, and  an edgeedge with one O(22)LiSiNi2 tetrahedra. In the fourteenth O site, O(14) is bonded in a trigonal planar geometry to one Ni(3), one Ni(4), and one Si(6) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one Ni(1), one Ni(5), and one Si(2) atom. In the sixteenth O site, O(16) is bonded to one Li(3), one Li(5), one Ni(2), and one Si(5) atom to form distorted OLi2SiNi tetrahedra that share  a cornercorner with one O(10)Li2SiNi tetrahedra,  a cornercorner with one O(9)Li2SiNi tetrahedra, corners with two equivalent O(21)Li2SiNi tetrahedra, corners with two equivalent O(2)LiSiNi2 tetrahedra, and corners with two equivalent O(1)Li2SiNi trigonal pyramids. In the seventeenth O site, O(17) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Li(2), one Ni(5), and one Si(5) atom. In the eighteenth O site, O(18) is bonded to one Li(1), one Ni(5), one Ni(6), and one Si(1) atom to form distorted OLiSiNi2 tetrahedra that share  a cornercorner with one O(2)LiSiNi2 tetrahedra,  a cornercorner with one O(22)LiSiNi2 tetrahedra, corners with two equivalent O(3)Li2SiNi tetrahedra,  a cornercorner with one O(19)Li2SiNi trigonal pyramid, and corners with two equivalent O(13)LiSiNi2 trigonal pyramids. In the nineteenth O site, O(19) is bonded to one Li(4), one Li(6), one Ni(1), and one Si(1) atom to form distorted OLi2SiNi trigonal pyramids that share  a cornercorner with one O(9)Li2SiNi tetrahedra,  a cornercorner with one O(18)LiSiNi2 tetrahedra,  a cornercorner with one O(22)LiSiNi2 tetrahedra, corners with two equivalent O(3)Li2SiNi tetrahedra, corners with two equivalent O(13)LiSiNi2 trigonal pyramids, and  an edgeedge with one O(24)LiSiNi2 tetrahedra. In the twentieth O site, O(20) is bonded in a trigonal planar geometry to one Ni(6), one Ni(7), and one Si(2) atom. In the twenty-first O site, O(21) is bonded to one Li(3), one Li(5), one Ni(9), and one Si(6) atom to form distorted OLi2SiNi tetrahedra that share  a cornercorner with one O(9)Li2SiNi tetrahedra,  a cornercorner with one O(22)LiSiNi2 tetrahedra, corners with two equivalent O(10)Li2SiNi tetrahedra, corners with two equivalent O(16)Li2SiNi tetrahedra, and  an edgeedge with one O(1)Li2SiNi trigonal pyramid. In the twenty-second O site, O(22) is bonded to one Li(6), one Ni(3), one Ni(6), and one Si(6) atom to form distorted OLiSiNi2 tetrahedra that share  a cornercorner with one O(21)Li2SiNi tetrahedra,  a cornercorner with one O(18)LiSiNi2 tetrahedra,  a cornercorner with one O(24)LiSiNi2 tetrahedra, corners with two equivalent O(9)Li2SiNi tetrahedra,  a cornercorner with one O(19)Li2SiNi trigonal pyramid,  a cornercorner with one O(13)LiSiNi2 trigonal pyramid, and  an edgeedge with one O(13)LiSiNi2 trigonal pyramid. In the twenty-third O site, O(23) is bonded in a trigonal planar geometry to one Ni(4), one Ni(7), and one Si(6) atom. In the twenty-fourth O site, O(24) is bonded to one Li(6), one Ni(1), one Ni(7), and one Si(3) atom to form distorted OLiSiNi2 tetrahedra that share  a cornercorner with one O(22)LiSiNi2 tetrahedra, corners with two equivalent O(9)Li2SiNi tetrahedra,  a cornercorner with one O(13)LiSiNi2 trigonal pyramid, and  an edgeedge with one O(19)Li2SiNi trigonal pyramid.