Li2CrAl2SbO8 is Spinel-derived structured and crystallizes in the monoclinic Cm space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(12), one O(7), and two equivalent O(11) atoms to form LiO4 tetrahedra that share  a cornercorner with one Al(1)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Al(3)O6 octahedra, corners with three equivalent Sb(2)O6 octahedra, and corners with four equivalent Al(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-61°. In the second Li site, Li(2) is bonded to one O(10), one O(8), and two equivalent O(9) atoms to form LiO4 tetrahedra that share  a cornercorner with one Al(3)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, corners with three equivalent Sb(1)O6 octahedra, and corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-61°. In the third Li site, Li(3) is bonded in a rectangular see-saw-like geometry to one O(1), one O(4), and two equivalent O(3) atoms. In the fourth Li site, Li(4) is bonded to one O(2), one O(6), and two equivalent O(5) atoms to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Al(3)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, corners with three equivalent Sb(2)O6 octahedra,  an edgeedge with one Al(1)O6 octahedra, and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 63-66°. Cr(1) is bonded to one O(1), one O(10), one O(5), one O(6), one O(7), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Sb(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Sb(1)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, edges with two equivalent Al(1)O6 octahedra, and  an edgeedge with one Li(4)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 52-53°. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(7), two equivalent O(5), and two equivalent O(9) atoms to form AlO6 octahedra that share corners with two equivalent Sb(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Sb(1)O6 octahedra, edges with four equivalent Cr(1)O6 octahedra, and  an edgeedge with one Li(4)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 49°. In the second Al site, Al(2) is bonded to one O(11), one O(12), one O(2), one O(3), one O(4), and one O(8) atom to form AlO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid,  an edgeedge with one Sb(2)O6 octahedra, edges with two equivalent Al(2)O6 octahedra, and edges with two equivalent Al(3)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. In the third Al site, Al(3) is bonded to one O(2), one O(8), two equivalent O(11), and two equivalent O(3) atoms to form AlO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid,  an edgeedge with one Sb(2)O6 octahedra, and edges with four equivalent Al(2)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(4), two equivalent O(3), and two equivalent O(9) atoms to form SbO6 octahedra that share corners with two equivalent Al(3)O6 octahedra, corners with four equivalent Al(2)O6 octahedra, corners with three equivalent Li(2)O4 tetrahedra,  an edgeedge with one Al(1)O6 octahedra, and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. In the second Sb site, Sb(2) is bonded to one O(12), one O(6), two equivalent O(11), and two equivalent O(5) atoms to form SbO6 octahedra that share corners with two equivalent Al(1)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(4)O4 trigonal pyramids,  an edgeedge with one Al(3)O6 octahedra, and edges with two equivalent Al(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-53°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Li(3), two equivalent Cr(1), and one Al(1) atom to form corner-sharing OLiAlCr2 tetrahedra. In the second O site, O(2) is bonded to one Li(4), one Al(3), and two equivalent Al(2) atoms to form OLiAl3 tetrahedra that share corners with three equivalent O(8)LiAl3 tetrahedra, corners with four equivalent O(11)LiAl2Sb tetrahedra, and corners with two equivalent O(12)LiAl2Sb trigonal pyramids. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(3), one Al(2), one Al(3), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Li(3), two equivalent Al(2), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Li(4), one Cr(1), one Al(1), and one Sb(2) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(4), two equivalent Cr(1), and one Sb(2) atom. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Li(1), two equivalent Cr(1), and one Al(1) atom. In the eighth O site, O(8) is bonded to one Li(2), one Al(3), and two equivalent Al(2) atoms to form distorted OLiAl3 tetrahedra that share corners with three equivalent O(2)LiAl3 tetrahedra, corners with two equivalent O(9)LiAlCrSb trigonal pyramids, edges with two equivalent O(11)LiAl2Sb tetrahedra, and  an edgeedge with one O(12)LiAl2Sb trigonal pyramid. In the ninth O site, O(9) is bonded to one Li(2), one Cr(1), one Al(1), and one Sb(1) atom to form distorted OLiAlCrSb trigonal pyramids that share  a cornercorner with one O(8)LiAl3 tetrahedra, corners with two equivalent O(1)LiAlCr2 tetrahedra,  a cornercorner with one O(9)LiAlCrSb trigonal pyramid, and  an edgeedge with one O(9)LiAlCrSb trigonal pyramid. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), two equivalent Cr(1), and one Sb(1) atom. In the eleventh O site, O(11) is bonded to one Li(1), one Al(2), one Al(3), and one Sb(2) atom to form distorted OLiAl2Sb tetrahedra that share  a cornercorner with one O(11)LiAl2Sb tetrahedra, corners with two equivalent O(2)LiAl3 tetrahedra,  a cornercorner with one O(12)LiAl2Sb trigonal pyramid,  an edgeedge with one O(11)LiAl2Sb tetrahedra,  an edgeedge with one O(8)LiAl3 tetrahedra, and  an edgeedge with one O(12)LiAl2Sb trigonal pyramid. In the twelfth O site, O(12) is bonded to one Li(1), two equivalent Al(2), and one Sb(2) atom to form distorted OLiAl2Sb trigonal pyramids that share corners with two equivalent O(11)LiAl2Sb tetrahedra, corners with two equivalent O(2)LiAl3 tetrahedra,  an edgeedge with one O(8)LiAl3 tetrahedra, and edges with two equivalent O(11)LiAl2Sb tetrahedra.
Li2CrAl2SbO8 is Spinel-derived structured and crystallizes in the monoclinic Cm space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(12), one O(7), and two equivalent O(11) atoms to form LiO4 tetrahedra that share  a cornercorner with one Al(1)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Al(3)O6 octahedra, corners with three equivalent Sb(2)O6 octahedra, and corners with four equivalent Al(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-61°. The Li(1)-O(12) bond length is 1.96 Å. The Li(1)-O(7) bond length is 2.00 Å. Both Li(1)-O(11) bond lengths are 1.95 Å. In the second Li site, Li(2) is bonded to one O(10), one O(8), and two equivalent O(9) atoms to form LiO4 tetrahedra that share  a cornercorner with one Al(3)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, corners with three equivalent Sb(1)O6 octahedra, and corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-61°. The Li(2)-O(10) bond length is 1.93 Å. The Li(2)-O(8) bond length is 2.02 Å. Both Li(2)-O(9) bond lengths are 1.94 Å. In the third Li site, Li(3) is bonded in a rectangular see-saw-like geometry to one O(1), one O(4), and two equivalent O(3) atoms. The Li(3)-O(1) bond length is 1.78 Å. The Li(3)-O(4) bond length is 1.97 Å. Both Li(3)-O(3) bond lengths are 1.97 Å. In the fourth Li site, Li(4) is bonded to one O(2), one O(6), and two equivalent O(5) atoms to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Al(3)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, corners with three equivalent Sb(2)O6 octahedra,  an edgeedge with one Al(1)O6 octahedra, and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 63-66°. The Li(4)-O(2) bond length is 1.81 Å. The Li(4)-O(6) bond length is 1.95 Å. Both Li(4)-O(5) bond lengths are 1.97 Å. Cr(1) is bonded to one O(1), one O(10), one O(5), one O(6), one O(7), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Sb(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Sb(1)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, edges with two equivalent Al(1)O6 octahedra, and  an edgeedge with one Li(4)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 52-53°. The Cr(1)-O(1) bond length is 1.97 Å. The Cr(1)-O(10) bond length is 2.03 Å. The Cr(1)-O(5) bond length is 2.06 Å. The Cr(1)-O(6) bond length is 2.04 Å. The Cr(1)-O(7) bond length is 1.97 Å. The Cr(1)-O(9) bond length is 2.03 Å. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(7), two equivalent O(5), and two equivalent O(9) atoms to form AlO6 octahedra that share corners with two equivalent Sb(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra,  an edgeedge with one Sb(1)O6 octahedra, edges with four equivalent Cr(1)O6 octahedra, and  an edgeedge with one Li(4)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 49°. The Al(1)-O(1) bond length is 1.83 Å. The Al(1)-O(7) bond length is 1.85 Å. Both Al(1)-O(5) bond lengths are 2.00 Å. Both Al(1)-O(9) bond lengths are 1.98 Å. In the second Al site, Al(2) is bonded to one O(11), one O(12), one O(2), one O(3), one O(4), and one O(8) atom to form AlO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid,  an edgeedge with one Sb(2)O6 octahedra, edges with two equivalent Al(2)O6 octahedra, and edges with two equivalent Al(3)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. The Al(2)-O(11) bond length is 1.97 Å. The Al(2)-O(12) bond length is 1.98 Å. The Al(2)-O(2) bond length is 1.89 Å. The Al(2)-O(3) bond length is 1.99 Å. The Al(2)-O(4) bond length is 2.00 Å. The Al(2)-O(8) bond length is 1.90 Å. In the third Al site, Al(3) is bonded to one O(2), one O(8), two equivalent O(11), and two equivalent O(3) atoms to form AlO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one Li(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid,  an edgeedge with one Sb(2)O6 octahedra, and edges with four equivalent Al(2)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. The Al(3)-O(2) bond length is 1.88 Å. The Al(3)-O(8) bond length is 1.90 Å. Both Al(3)-O(11) bond lengths are 1.97 Å. Both Al(3)-O(3) bond lengths are 2.00 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(4), two equivalent O(3), and two equivalent O(9) atoms to form SbO6 octahedra that share corners with two equivalent Al(3)O6 octahedra, corners with four equivalent Al(2)O6 octahedra, corners with three equivalent Li(2)O4 tetrahedra,  an edgeedge with one Al(1)O6 octahedra, and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. The Sb(1)-O(10) bond length is 2.06 Å. The Sb(1)-O(4) bond length is 2.01 Å. Both Sb(1)-O(3) bond lengths are 2.02 Å. Both Sb(1)-O(9) bond lengths are 2.06 Å. In the second Sb site, Sb(2) is bonded to one O(12), one O(6), two equivalent O(11), and two equivalent O(5) atoms to form SbO6 octahedra that share corners with two equivalent Al(1)O6 octahedra, corners with four equivalent Cr(1)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(4)O4 trigonal pyramids,  an edgeedge with one Al(3)O6 octahedra, and edges with two equivalent Al(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-53°. The Sb(2)-O(12) bond length is 2.05 Å. The Sb(2)-O(6) bond length is 2.00 Å. Both Sb(2)-O(11) bond lengths are 2.05 Å. Both Sb(2)-O(5) bond lengths are 2.01 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded to one Li(3), two equivalent Cr(1), and one Al(1) atom to form corner-sharing OLiAlCr2 tetrahedra. In the second O site, O(2) is bonded to one Li(4), one Al(3), and two equivalent Al(2) atoms to form OLiAl3 tetrahedra that share corners with three equivalent O(8)LiAl3 tetrahedra, corners with four equivalent O(11)LiAl2Sb tetrahedra, and corners with two equivalent O(12)LiAl2Sb trigonal pyramids. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(3), one Al(2), one Al(3), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Li(3), two equivalent Al(2), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Li(4), one Cr(1), one Al(1), and one Sb(2) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(4), two equivalent Cr(1), and one Sb(2) atom. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Li(1), two equivalent Cr(1), and one Al(1) atom. In the eighth O site, O(8) is bonded to one Li(2), one Al(3), and two equivalent Al(2) atoms to form distorted OLiAl3 tetrahedra that share corners with three equivalent O(2)LiAl3 tetrahedra, corners with two equivalent O(9)LiAlCrSb trigonal pyramids, edges with two equivalent O(11)LiAl2Sb tetrahedra, and  an edgeedge with one O(12)LiAl2Sb trigonal pyramid. In the ninth O site, O(9) is bonded to one Li(2), one Cr(1), one Al(1), and one Sb(1) atom to form distorted OLiAlCrSb trigonal pyramids that share  a cornercorner with one O(8)LiAl3 tetrahedra, corners with two equivalent O(1)LiAlCr2 tetrahedra,  a cornercorner with one O(9)LiAlCrSb trigonal pyramid, and  an edgeedge with one O(9)LiAlCrSb trigonal pyramid. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), two equivalent Cr(1), and one Sb(1) atom. In the eleventh O site, O(11) is bonded to one Li(1), one Al(2), one Al(3), and one Sb(2) atom to form distorted OLiAl2Sb tetrahedra that share  a cornercorner with one O(11)LiAl2Sb tetrahedra, corners with two equivalent O(2)LiAl3 tetrahedra,  a cornercorner with one O(12)LiAl2Sb trigonal pyramid,  an edgeedge with one O(11)LiAl2Sb tetrahedra,  an edgeedge with one O(8)LiAl3 tetrahedra, and  an edgeedge with one O(12)LiAl2Sb trigonal pyramid. In the twelfth O site, O(12) is bonded to one Li(1), two equivalent Al(2), and one Sb(2) atom to form distorted OLiAl2Sb trigonal pyramids that share corners with two equivalent O(11)LiAl2Sb tetrahedra, corners with two equivalent O(2)LiAl3 tetrahedra,  an edgeedge with one O(8)LiAl3 tetrahedra, and edges with two equivalent O(11)LiAl2Sb tetrahedra.