Li4Mn3Co3(CuO8)2 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(3), and two equivalent O(9) atoms to form LiO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with three equivalent Cu(2)O6 octahedra, and corners with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-66°. In the second Li site, Li(2) is bonded in a rectangular see-saw-like geometry to one O(5), one O(7), and two equivalent O(11) atoms. In the third Li site, Li(3) is bonded in a rectangular see-saw-like geometry to one O(4), one O(8), and two equivalent O(1) atoms. In the fourth Li site, Li(4) is bonded to one O(10), one O(2), and two equivalent O(6) atoms to form LiO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with three equivalent Cu(1)O6 octahedra, and corners with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-65°. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), two equivalent O(11), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent Cu(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Cu(1)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(12), one O(5), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Cu(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  an edgeedge with one Cu(2)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and edges with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-53°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form CoO6 octahedra that share corners with two equivalent Cu(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-53°. In the second Co site, Co(2) is bonded to one O(10), one O(5), two equivalent O(1), and two equivalent O(9) atoms to form CoO6 octahedra that share corners with two equivalent Cu(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  an edgeedge with one Cu(2)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form CuO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, corners with three equivalent Li(4)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-53°. In the second Cu site, Cu(2) is bonded to one O(12), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form CuO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra,  an edgeedge with one Co(2)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-53°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(3), one Mn(2), one Co(2), and one Cu(1) atom. In the second O site, O(2) is bonded to one Li(4), two equivalent Co(1), and one Cu(1) atom to form distorted OLiCo2Cu tetrahedra that share corners with two equivalent O(4)LiMnCo2 tetrahedra, corners with two equivalent O(6)LiMnCoCu tetrahedra,  a cornercorner with one O(10)LiMn2Co trigonal pyramid, edges with two equivalent O(6)LiMnCoCu tetrahedra, and  an edgeedge with one O(3)LiMnCo2 trigonal pyramid. In the third O site, O(3) is bonded to one Li(1), one Mn(1), and two equivalent Co(1) atoms to form distorted OLiMnCo2 trigonal pyramids that share  a cornercorner with one O(12)LiMn2Cu tetrahedra, corners with two equivalent O(9)LiMnCoCu tetrahedra, corners with three equivalent O(4)LiMnCo2 tetrahedra,  an edgeedge with one O(2)LiCo2Cu tetrahedra, and edges with two equivalent O(6)LiMnCoCu tetrahedra. In the fourth O site, O(4) is bonded to one Li(3), one Mn(1), and two equivalent Co(1) atoms to form distorted OLiMnCo2 tetrahedra that share corners with two equivalent O(2)LiCo2Cu tetrahedra, corners with four equivalent O(6)LiMnCoCu tetrahedra, and corners with three equivalent O(3)LiMnCo2 trigonal pyramids. In the fifth O site, O(5) is bonded to one Li(2), two equivalent Mn(2), and one Co(2) atom to form distorted OLiMn2Co tetrahedra that share corners with two equivalent O(12)LiMn2Cu tetrahedra, corners with four equivalent O(9)LiMnCoCu tetrahedra, and corners with three equivalent O(10)LiMn2Co trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(4), one Mn(1), one Co(1), and one Cu(1) atom to form distorted OLiMnCoCu tetrahedra that share  a cornercorner with one O(2)LiCo2Cu tetrahedra,  a cornercorner with one O(6)LiMnCoCu tetrahedra, corners with two equivalent O(4)LiMnCo2 tetrahedra,  a cornercorner with one O(10)LiMn2Co trigonal pyramid,  an edgeedge with one O(2)LiCo2Cu tetrahedra,  an edgeedge with one O(6)LiMnCoCu tetrahedra, and  an edgeedge with one O(3)LiMnCo2 trigonal pyramid. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Li(2), two equivalent Co(1), and one Cu(2) atom. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Li(3), two equivalent Mn(2), and one Cu(1) atom. In the ninth O site, O(9) is bonded to one Li(1), one Mn(2), one Co(2), and one Cu(2) atom to form distorted OLiMnCoCu tetrahedra that share  a cornercorner with one O(12)LiMn2Cu tetrahedra,  a cornercorner with one O(9)LiMnCoCu tetrahedra, corners with two equivalent O(5)LiMn2Co tetrahedra,  a cornercorner with one O(3)LiMnCo2 trigonal pyramid,  an edgeedge with one O(12)LiMn2Cu tetrahedra,  an edgeedge with one O(9)LiMnCoCu tetrahedra, and  an edgeedge with one O(10)LiMn2Co trigonal pyramid. In the tenth O site, O(10) is bonded to one Li(4), two equivalent Mn(2), and one Co(2) atom to form distorted OLiMn2Co trigonal pyramids that share  a cornercorner with one O(2)LiCo2Cu tetrahedra, corners with two equivalent O(6)LiMnCoCu tetrahedra, corners with three equivalent O(5)LiMn2Co tetrahedra,  an edgeedge with one O(12)LiMn2Cu tetrahedra, and edges with two equivalent O(9)LiMnCoCu tetrahedra. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one Li(2), one Mn(1), one Co(1), and one Cu(2) atom. In the twelfth O site, O(12) is bonded to one Li(1), two equivalent Mn(2), and one Cu(2) atom to form distorted OLiMn2Cu tetrahedra that share corners with two equivalent O(5)LiMn2Co tetrahedra, corners with two equivalent O(9)LiMnCoCu tetrahedra,  a cornercorner with one O(3)LiMnCo2 trigonal pyramid, edges with two equivalent O(9)LiMnCoCu tetrahedra, and  an edgeedge with one O(10)LiMn2Co trigonal pyramid.
Li4Mn3Co3(CuO8)2 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(3), and two equivalent O(9) atoms to form LiO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with three equivalent Cu(2)O6 octahedra, and corners with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-66°. The Li(1)-O(12) bond length is 1.93 Å. The Li(1)-O(3) bond length is 1.99 Å. Both Li(1)-O(9) bond lengths are 1.96 Å. In the second Li site, Li(2) is bonded in a rectangular see-saw-like geometry to one O(5), one O(7), and two equivalent O(11) atoms. The Li(2)-O(5) bond length is 1.78 Å. The Li(2)-O(7) bond length is 1.86 Å. Both Li(2)-O(11) bond lengths are 1.89 Å. In the third Li site, Li(3) is bonded in a rectangular see-saw-like geometry to one O(4), one O(8), and two equivalent O(1) atoms. The Li(3)-O(4) bond length is 1.77 Å. The Li(3)-O(8) bond length is 1.94 Å. Both Li(3)-O(1) bond lengths are 1.92 Å. In the fourth Li site, Li(4) is bonded to one O(10), one O(2), and two equivalent O(6) atoms to form LiO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with three equivalent Cu(1)O6 octahedra, and corners with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-65°. The Li(4)-O(10) bond length is 2.04 Å. The Li(4)-O(2) bond length is 1.95 Å. Both Li(4)-O(6) bond lengths are 1.93 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(4), two equivalent O(11), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent Cu(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Cu(1)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. The Mn(1)-O(3) bond length is 1.92 Å. The Mn(1)-O(4) bond length is 1.91 Å. Both Mn(1)-O(11) bond lengths are 1.95 Å. Both Mn(1)-O(6) bond lengths are 1.94 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(12), one O(5), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Cu(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  an edgeedge with one Cu(2)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and edges with two equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-53°. The Mn(2)-O(1) bond length is 1.96 Å. The Mn(2)-O(10) bond length is 1.93 Å. The Mn(2)-O(12) bond length is 1.92 Å. The Mn(2)-O(5) bond length is 1.92 Å. The Mn(2)-O(8) bond length is 1.94 Å. The Mn(2)-O(9) bond length is 1.94 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form CoO6 octahedra that share corners with two equivalent Cu(2)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-53°. The Co(1)-O(11) bond length is 1.95 Å. The Co(1)-O(2) bond length is 1.89 Å. The Co(1)-O(3) bond length is 1.92 Å. The Co(1)-O(4) bond length is 1.91 Å. The Co(1)-O(6) bond length is 1.92 Å. The Co(1)-O(7) bond length is 1.92 Å. In the second Co site, Co(2) is bonded to one O(10), one O(5), two equivalent O(1), and two equivalent O(9) atoms to form CoO6 octahedra that share corners with two equivalent Cu(1)O6 octahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  an edgeedge with one Cu(2)O6 octahedra, and edges with four equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. The Co(2)-O(10) bond length is 1.92 Å. The Co(2)-O(5) bond length is 1.91 Å. Both Co(2)-O(1) bond lengths are 1.90 Å. Both Co(2)-O(9) bond lengths are 1.91 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(2), one O(8), two equivalent O(1), and two equivalent O(6) atoms to form CuO6 octahedra that share corners with two equivalent Co(2)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, corners with three equivalent Li(4)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra, and edges with two equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-53°. The Cu(1)-O(2) bond length is 2.13 Å. The Cu(1)-O(8) bond length is 2.10 Å. Both Cu(1)-O(1) bond lengths are 2.07 Å. Both Cu(1)-O(6) bond lengths are 2.05 Å. In the second Cu site, Cu(2) is bonded to one O(12), one O(7), two equivalent O(11), and two equivalent O(9) atoms to form CuO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, corners with three equivalent Li(1)O4 tetrahedra,  an edgeedge with one Co(2)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-53°. The Cu(2)-O(12) bond length is 2.16 Å. The Cu(2)-O(7) bond length is 2.02 Å. Both Cu(2)-O(11) bond lengths are 2.01 Å. Both Cu(2)-O(9) bond lengths are 2.16 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Li(3), one Mn(2), one Co(2), and one Cu(1) atom. In the second O site, O(2) is bonded to one Li(4), two equivalent Co(1), and one Cu(1) atom to form distorted OLiCo2Cu tetrahedra that share corners with two equivalent O(4)LiMnCo2 tetrahedra, corners with two equivalent O(6)LiMnCoCu tetrahedra,  a cornercorner with one O(10)LiMn2Co trigonal pyramid, edges with two equivalent O(6)LiMnCoCu tetrahedra, and  an edgeedge with one O(3)LiMnCo2 trigonal pyramid. In the third O site, O(3) is bonded to one Li(1), one Mn(1), and two equivalent Co(1) atoms to form distorted OLiMnCo2 trigonal pyramids that share  a cornercorner with one O(12)LiMn2Cu tetrahedra, corners with two equivalent O(9)LiMnCoCu tetrahedra, corners with three equivalent O(4)LiMnCo2 tetrahedra,  an edgeedge with one O(2)LiCo2Cu tetrahedra, and edges with two equivalent O(6)LiMnCoCu tetrahedra. In the fourth O site, O(4) is bonded to one Li(3), one Mn(1), and two equivalent Co(1) atoms to form distorted OLiMnCo2 tetrahedra that share corners with two equivalent O(2)LiCo2Cu tetrahedra, corners with four equivalent O(6)LiMnCoCu tetrahedra, and corners with three equivalent O(3)LiMnCo2 trigonal pyramids. In the fifth O site, O(5) is bonded to one Li(2), two equivalent Mn(2), and one Co(2) atom to form distorted OLiMn2Co tetrahedra that share corners with two equivalent O(12)LiMn2Cu tetrahedra, corners with four equivalent O(9)LiMnCoCu tetrahedra, and corners with three equivalent O(10)LiMn2Co trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(4), one Mn(1), one Co(1), and one Cu(1) atom to form distorted OLiMnCoCu tetrahedra that share  a cornercorner with one O(2)LiCo2Cu tetrahedra,  a cornercorner with one O(6)LiMnCoCu tetrahedra, corners with two equivalent O(4)LiMnCo2 tetrahedra,  a cornercorner with one O(10)LiMn2Co trigonal pyramid,  an edgeedge with one O(2)LiCo2Cu tetrahedra,  an edgeedge with one O(6)LiMnCoCu tetrahedra, and  an edgeedge with one O(3)LiMnCo2 trigonal pyramid. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Li(2), two equivalent Co(1), and one Cu(2) atom. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Li(3), two equivalent Mn(2), and one Cu(1) atom. In the ninth O site, O(9) is bonded to one Li(1), one Mn(2), one Co(2), and one Cu(2) atom to form distorted OLiMnCoCu tetrahedra that share  a cornercorner with one O(12)LiMn2Cu tetrahedra,  a cornercorner with one O(9)LiMnCoCu tetrahedra, corners with two equivalent O(5)LiMn2Co tetrahedra,  a cornercorner with one O(3)LiMnCo2 trigonal pyramid,  an edgeedge with one O(12)LiMn2Cu tetrahedra,  an edgeedge with one O(9)LiMnCoCu tetrahedra, and  an edgeedge with one O(10)LiMn2Co trigonal pyramid. In the tenth O site, O(10) is bonded to one Li(4), two equivalent Mn(2), and one Co(2) atom to form distorted OLiMn2Co trigonal pyramids that share  a cornercorner with one O(2)LiCo2Cu tetrahedra, corners with two equivalent O(6)LiMnCoCu tetrahedra, corners with three equivalent O(5)LiMn2Co tetrahedra,  an edgeedge with one O(12)LiMn2Cu tetrahedra, and edges with two equivalent O(9)LiMnCoCu tetrahedra. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one Li(2), one Mn(1), one Co(1), and one Cu(2) atom. In the twelfth O site, O(12) is bonded to one Li(1), two equivalent Mn(2), and one Cu(2) atom to form distorted OLiMn2Cu tetrahedra that share corners with two equivalent O(5)LiMn2Co tetrahedra, corners with two equivalent O(9)LiMnCoCu tetrahedra,  a cornercorner with one O(3)LiMnCo2 trigonal pyramid, edges with two equivalent O(9)LiMnCoCu tetrahedra, and  an edgeedge with one O(10)LiMn2Co trigonal pyramid.