Li2MnCuO4 is Caswellsilverite-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(2), one O(3), one O(7), one O(8), and two equivalent O(5) atoms to form LiO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra,  a cornercorner with one Cu(2)O6 octahedra, corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(2)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Cu(1)O6 octahedra, edges with two equivalent Cu(2)O6 octahedra, edges with three equivalent Li(3)O6 octahedra, and edges with three equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the second Li site, Li(2) is bonded to one O(1), one O(4), one O(7), one O(8), and two equivalent O(6) atoms to form LiO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra,  a cornercorner with one Cu(2)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 Mn(2)O6 octahedra, edges with two equivalent Cu(1)O6 octahedra, edges with two equivalent Cu(2)O6 octahedra, edges with three equivalent Li(4)O6 octahedra, and edges with three equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the third Li site, Li(3) is bonded to one O(3), one O(4), one O(5), one O(8), and two equivalent O(2) atoms to form LiO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(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 Cu(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, edges with three equivalent Li(1)O6 octahedra, and edges with three equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the fourth Li site, Li(4) is bonded to one O(3), one O(4), one O(6), one O(7), and two equivalent O(1) atoms to form LiO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra, corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Li(4)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, edges with three equivalent Li(2)O6 octahedra, and edges with three equivalent Cu(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(6), one O(8), and two equivalent O(4) atoms to form MnO6 octahedra that share  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Cu(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with three equivalent Li(2)O6 octahedra, and edges with three equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-8°. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(5), one O(7), and two equivalent O(3) atoms to form MnO6 octahedra that share  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with three equivalent Li(1)O6 octahedra, and edges with three equivalent Cu(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-8°. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(2), one O(4), one O(5), one O(6), and two equivalent O(8) atoms to form CuO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra, corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(2)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Mn(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with three equivalent Li(3)O6 octahedra, and edges with three equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-10°. In the second Cu site, Cu(2) is bonded to one O(1), one O(3), one O(5), one O(6), and two equivalent O(7) atoms to form CuO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra, corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(2)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with three equivalent Li(4)O6 octahedra, and edges with three equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-10°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Li(2), two equivalent Li(4), one Mn(1), one Mn(2), and one Cu(2) atom to form OLi3Mn2Cu octahedra that share  a cornercorner with one O(3)Li3Mn2Cu octahedra,  a cornercorner with one O(4)Li3Mn2Cu octahedra, corners with two equivalent O(1)Li3Mn2Cu octahedra, corners with two equivalent O(2)Li3Mn2Cu octahedra,  an edgeedge with one O(5)Li3MnCu2 octahedra,  an edgeedge with one O(8)Li3MnCu2 octahedra, edges with two equivalent O(3)Li3Mn2Cu octahedra, edges with two equivalent O(4)Li3Mn2Cu octahedra, edges with three equivalent O(6)Li3MnCu2 octahedra, and edges with three equivalent O(7)Li3MnCu2 octahedra. The corner-sharing octahedral tilt angles range from 3-9°. In the second O site, O(2) is bonded to one Li(1), two equivalent Li(3), one Mn(1), one Mn(2), and one Cu(1) atom to form OLi3Mn2Cu octahedra that share  a cornercorner with one O(3)Li3Mn2Cu octahedra,  a cornercorner with one O(4)Li3Mn2Cu octahedra, corners with two equivalent O(1)Li3Mn2Cu octahedra, corners with two equivalent O(2)Li3Mn2Cu octahedra,  an edgeedge with one O(6)Li3MnCu2 octahedra,  an edgeedge with one O(7)Li3MnCu2 octahedra, edges with two equivalent O(3)Li3Mn2Cu octahedra, edges with two equivalent O(4)Li3Mn2Cu octahedra, edges with three equivalent O(5)Li3MnCu2 octahedra, and edges with three equivalent O(8)Li3MnCu2 octahedra. The corner-sharing octahedral tilt angles range from 3-9°. In the third O site, O(3) is bonded to one Li(1), one Li(3), one Li(4), two equivalent Mn(2), and one Cu(2) atom to form OLi3Mn2Cu octahedra that share  a cornercorner with one O(1)Li3Mn2Cu octahedra,  a cornercorner with one O(2)Li3Mn2Cu octahedra, corners with two equivalent O(3)Li3Mn2Cu octahedra, corners with two equivalent O(4)Li3Mn2Cu octahedra,  an edgeedge with one O(6)Li3MnCu2 octahedra,  an edgeedge with one O(8)Li3MnCu2 octahedra, edges with two equivalent O(1)Li3Mn2Cu octahedra, edges with two equivalent O(2)Li3Mn2Cu octahedra, edges with three equivalent O(5)Li3MnCu2 octahedra, and edges with three equivalent O(7)Li3MnCu2 octahedra. The corner-sharing octahedral tilt angles range from 3-8°. In the fourth O site, O(4) is bonded to one Li(2), one Li(3), one Li(4), two equivalent Mn(1), and one Cu(1) atom to form OLi3Mn2Cu octahedra that share  a cornercorner with one O(1)Li3Mn2Cu octahedra,  a cornercorner with one O(2)Li3Mn2Cu octahedra, corners with two equivalent O(3)Li3Mn2Cu octahedra, corners with two equivalent O(4)Li3Mn2Cu octahedra,  an edgeedge with one O(5)Li3MnCu2 octahedra,  an edgeedge with one O(7)Li3MnCu2 octahedra, edges with two equivalent O(1)Li3Mn2Cu octahedra, edges with two equivalent O(2)Li3Mn2Cu octahedra, edges with three equivalent O(6)Li3MnCu2 octahedra, and edges with three equivalent O(8)Li3MnCu2 octahedra. The corner-sharing octahedral tilt angles range from 3-8°. In the fifth O site, O(5) is bonded to one Li(3), two equivalent Li(1), one Mn(2), one Cu(1), and one Cu(2) atom to form OLi3MnCu2 octahedra that share  a cornercorner with one O(7)Li3MnCu2 octahedra,  a cornercorner with one O(8)Li3MnCu2 octahedra, corners with two equivalent O(5)Li3MnCu2 octahedra, corners with two equivalent O(6)Li3MnCu2 octahedra,  an edgeedge with one O(1)Li3Mn2Cu octahedra,  an edgeedge with one O(4)Li3Mn2Cu octahedra, edges with two equivalent O(7)Li3MnCu2 octahedra, edges with two equivalent O(8)Li3MnCu2 octahedra, edges with three equivalent O(2)Li3Mn2Cu octahedra, and edges with three equivalent O(3)Li3Mn2Cu octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the sixth O site, O(6) is bonded to one Li(4), two equivalent Li(2), one Mn(1), one Cu(1), and one Cu(2) atom to form OLi3MnCu2 octahedra that share  a cornercorner with one O(7)Li3MnCu2 octahedra,  a cornercorner with one O(8)Li3MnCu2 octahedra, corners with two equivalent O(5)Li3MnCu2 octahedra, corners with two equivalent O(6)Li3MnCu2 octahedra,  an edgeedge with one O(2)Li3Mn2Cu octahedra,  an edgeedge with one O(3)Li3Mn2Cu octahedra, edges with two equivalent O(7)Li3MnCu2 octahedra, edges with two equivalent O(8)Li3MnCu2 octahedra, edges with three equivalent O(1)Li3Mn2Cu octahedra, and edges with three equivalent O(4)Li3Mn2Cu octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the seventh O site, O(7) is bonded to one Li(1), one Li(2), one Li(4), one Mn(2), and two equivalent Cu(2) atoms to form OLi3MnCu2 octahedra that share  a cornercorner with one O(5)Li3MnCu2 octahedra,  a cornercorner with one O(6)Li3MnCu2 octahedra, corners with two equivalent O(7)Li3MnCu2 octahedra, corners with two equivalent O(8)Li3MnCu2 octahedra,  an edgeedge with one O(2)Li3Mn2Cu octahedra,  an edgeedge with one O(4)Li3Mn2Cu octahedra, edges with two equivalent O(5)Li3MnCu2 octahedra, edges with two equivalent O(6)Li3MnCu2 octahedra, edges with three equivalent O(1)Li3Mn2Cu octahedra, and edges with three equivalent O(3)Li3Mn2Cu octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the eighth O site, O(8) is bonded to one Li(1), one Li(2), one Li(3), one Mn(1), and two equivalent Cu(1) atoms to form OLi3MnCu2 octahedra that share  a cornercorner with one O(5)Li3MnCu2 octahedra,  a cornercorner with one O(6)Li3MnCu2 octahedra, corners with two equivalent O(7)Li3MnCu2 octahedra, corners with two equivalent O(8)Li3MnCu2 octahedra,  an edgeedge with one O(1)Li3Mn2Cu octahedra,  an edgeedge with one O(3)Li3Mn2Cu octahedra, edges with two equivalent O(5)Li3MnCu2 octahedra, edges with two equivalent O(6)Li3MnCu2 octahedra, edges with three equivalent O(2)Li3Mn2Cu octahedra, and edges with three equivalent O(4)Li3Mn2Cu octahedra. The corner-sharing octahedral tilt angles range from 0-9°.
Li2MnCuO4 is Caswellsilverite-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(2), one O(3), one O(7), one O(8), and two equivalent O(5) atoms to form LiO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra,  a cornercorner with one Cu(2)O6 octahedra, corners with two equivalent Li(1)O6 octahedra, corners with two equivalent Li(2)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Cu(1)O6 octahedra, edges with two equivalent Cu(2)O6 octahedra, edges with three equivalent Li(3)O6 octahedra, and edges with three equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. The Li(1)-O(2) bond length is 2.23 Å. The Li(1)-O(3) bond length is 2.20 Å. The Li(1)-O(7) bond length is 2.10 Å. The Li(1)-O(8) bond length is 2.08 Å. Both Li(1)-O(5) bond lengths are 2.07 Å. In the second Li site, Li(2) is bonded to one O(1), one O(4), one O(7), one O(8), and two equivalent O(6) atoms to form LiO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra,  a cornercorner with one Cu(2)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 Mn(2)O6 octahedra, edges with two equivalent Cu(1)O6 octahedra, edges with two equivalent Cu(2)O6 octahedra, edges with three equivalent Li(4)O6 octahedra, and edges with three equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. The Li(2)-O(1) bond length is 2.23 Å. The Li(2)-O(4) bond length is 2.20 Å. The Li(2)-O(7) bond length is 2.09 Å. The Li(2)-O(8) bond length is 2.08 Å. Both Li(2)-O(6) bond lengths are 2.07 Å. In the third Li site, Li(3) is bonded to one O(3), one O(4), one O(5), one O(8), and two equivalent O(2) atoms to form LiO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(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 Cu(2)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, edges with three equivalent Li(1)O6 octahedra, and edges with three equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. The Li(3)-O(3) bond length is 2.10 Å. The Li(3)-O(4) bond length is 2.06 Å. The Li(3)-O(5) bond length is 2.26 Å. The Li(3)-O(8) bond length is 2.24 Å. Both Li(3)-O(2) bond lengths are 2.07 Å. In the fourth Li site, Li(4) is bonded to one O(3), one O(4), one O(6), one O(7), and two equivalent O(1) atoms to form LiO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra, corners with two equivalent Li(3)O6 octahedra, corners with two equivalent Li(4)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, edges with three equivalent Li(2)O6 octahedra, and edges with three equivalent Cu(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. The Li(4)-O(3) bond length is 2.11 Å. The Li(4)-O(4) bond length is 2.07 Å. The Li(4)-O(6) bond length is 2.22 Å. The Li(4)-O(7) bond length is 2.22 Å. Both Li(4)-O(1) bond lengths are 2.07 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(6), one O(8), and two equivalent O(4) atoms to form MnO6 octahedra that share  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  an edgeedge with one Li(1)O6 octahedra,  an edgeedge with one Cu(2)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with three equivalent Li(2)O6 octahedra, and edges with three equivalent Cu(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-8°. The Mn(1)-O(1) bond length is 1.97 Å. The Mn(1)-O(2) bond length is 1.96 Å. The Mn(1)-O(6) bond length is 1.94 Å. The Mn(1)-O(8) bond length is 1.93 Å. Both Mn(1)-O(4) bond lengths are 2.07 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(5), one O(7), and two equivalent O(3) atoms to form MnO6 octahedra that share  a cornercorner with one Li(3)O6 octahedra,  a cornercorner with one Li(4)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  an edgeedge with one Li(2)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, edges with two equivalent Li(3)O6 octahedra, edges with two equivalent Li(4)O6 octahedra, edges with three equivalent Li(1)O6 octahedra, and edges with three equivalent Cu(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-8°. The Mn(2)-O(1) bond length is 2.21 Å. The Mn(2)-O(2) bond length is 2.21 Å. The Mn(2)-O(5) bond length is 1.92 Å. The Mn(2)-O(7) bond length is 1.92 Å. Both Mn(2)-O(3) bond lengths are 2.07 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(2), one O(4), one O(5), one O(6), and two equivalent O(8) atoms to form CuO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra, corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(2)O6 octahedra,  an edgeedge with one Li(4)O6 octahedra,  an edgeedge with one Mn(2)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with three equivalent Li(3)O6 octahedra, and edges with three equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-10°. The Cu(1)-O(2) bond length is 1.95 Å. The Cu(1)-O(4) bond length is 1.95 Å. The Cu(1)-O(5) bond length is 2.09 Å. The Cu(1)-O(6) bond length is 2.07 Å. Both Cu(1)-O(8) bond lengths are 2.07 Å. In the second Cu site, Cu(2) is bonded to one O(1), one O(3), one O(5), one O(6), and two equivalent O(7) atoms to form CuO6 octahedra that share  a cornercorner with one Li(1)O6 octahedra,  a cornercorner with one Li(2)O6 octahedra, corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(2)O6 octahedra,  an edgeedge with one Li(3)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Li(1)O6 octahedra, edges with two equivalent Li(2)O6 octahedra, edges with three equivalent Li(4)O6 octahedra, and edges with three equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-10°. The Cu(2)-O(1) bond length is 1.94 Å. The Cu(2)-O(3) bond length is 1.95 Å. The Cu(2)-O(5) bond length is 2.11 Å. The Cu(2)-O(6) bond length is 2.08 Å. Both Cu(2)-O(7) bond lengths are 2.07 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Li(2), two equivalent Li(4), one Mn(1), one Mn(2), and one Cu(2) atom to form OLi3Mn2Cu octahedra that share  a cornercorner with one O(3)Li3Mn2Cu octahedra,  a cornercorner with one O(4)Li3Mn2Cu octahedra, corners with two equivalent O(1)Li3Mn2Cu octahedra, corners with two equivalent O(2)Li3Mn2Cu octahedra,  an edgeedge with one O(5)Li3MnCu2 octahedra,  an edgeedge with one O(8)Li3MnCu2 octahedra, edges with two equivalent O(3)Li3Mn2Cu octahedra, edges with two equivalent O(4)Li3Mn2Cu octahedra, edges with three equivalent O(6)Li3MnCu2 octahedra, and edges with three equivalent O(7)Li3MnCu2 octahedra. The corner-sharing octahedral tilt angles range from 3-9°. In the second O site, O(2) is bonded to one Li(1), two equivalent Li(3), one Mn(1), one Mn(2), and one Cu(1) atom to form OLi3Mn2Cu octahedra that share  a cornercorner with one O(3)Li3Mn2Cu octahedra,  a cornercorner with one O(4)Li3Mn2Cu octahedra, corners with two equivalent O(1)Li3Mn2Cu octahedra, corners with two equivalent O(2)Li3Mn2Cu octahedra,  an edgeedge with one O(6)Li3MnCu2 octahedra,  an edgeedge with one O(7)Li3MnCu2 octahedra, edges with two equivalent O(3)Li3Mn2Cu octahedra, edges with two equivalent O(4)Li3Mn2Cu octahedra, edges with three equivalent O(5)Li3MnCu2 octahedra, and edges with three equivalent O(8)Li3MnCu2 octahedra. The corner-sharing octahedral tilt angles range from 3-9°. In the third O site, O(3) is bonded to one Li(1), one Li(3), one Li(4), two equivalent Mn(2), and one Cu(2) atom to form OLi3Mn2Cu octahedra that share  a cornercorner with one O(1)Li3Mn2Cu octahedra,  a cornercorner with one O(2)Li3Mn2Cu octahedra, corners with two equivalent O(3)Li3Mn2Cu octahedra, corners with two equivalent O(4)Li3Mn2Cu octahedra,  an edgeedge with one O(6)Li3MnCu2 octahedra,  an edgeedge with one O(8)Li3MnCu2 octahedra, edges with two equivalent O(1)Li3Mn2Cu octahedra, edges with two equivalent O(2)Li3Mn2Cu octahedra, edges with three equivalent O(5)Li3MnCu2 octahedra, and edges with three equivalent O(7)Li3MnCu2 octahedra. The corner-sharing octahedral tilt angles range from 3-8°. In the fourth O site, O(4) is bonded to one Li(2), one Li(3), one Li(4), two equivalent Mn(1), and one Cu(1) atom to form OLi3Mn2Cu octahedra that share  a cornercorner with one O(1)Li3Mn2Cu octahedra,  a cornercorner with one O(2)Li3Mn2Cu octahedra, corners with two equivalent O(3)Li3Mn2Cu octahedra, corners with two equivalent O(4)Li3Mn2Cu octahedra,  an edgeedge with one O(5)Li3MnCu2 octahedra,  an edgeedge with one O(7)Li3MnCu2 octahedra, edges with two equivalent O(1)Li3Mn2Cu octahedra, edges with two equivalent O(2)Li3Mn2Cu octahedra, edges with three equivalent O(6)Li3MnCu2 octahedra, and edges with three equivalent O(8)Li3MnCu2 octahedra. The corner-sharing octahedral tilt angles range from 3-8°. In the fifth O site, O(5) is bonded to one Li(3), two equivalent Li(1), one Mn(2), one Cu(1), and one Cu(2) atom to form OLi3MnCu2 octahedra that share  a cornercorner with one O(7)Li3MnCu2 octahedra,  a cornercorner with one O(8)Li3MnCu2 octahedra, corners with two equivalent O(5)Li3MnCu2 octahedra, corners with two equivalent O(6)Li3MnCu2 octahedra,  an edgeedge with one O(1)Li3Mn2Cu octahedra,  an edgeedge with one O(4)Li3Mn2Cu octahedra, edges with two equivalent O(7)Li3MnCu2 octahedra, edges with two equivalent O(8)Li3MnCu2 octahedra, edges with three equivalent O(2)Li3Mn2Cu octahedra, and edges with three equivalent O(3)Li3Mn2Cu octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the sixth O site, O(6) is bonded to one Li(4), two equivalent Li(2), one Mn(1), one Cu(1), and one Cu(2) atom to form OLi3MnCu2 octahedra that share  a cornercorner with one O(7)Li3MnCu2 octahedra,  a cornercorner with one O(8)Li3MnCu2 octahedra, corners with two equivalent O(5)Li3MnCu2 octahedra, corners with two equivalent O(6)Li3MnCu2 octahedra,  an edgeedge with one O(2)Li3Mn2Cu octahedra,  an edgeedge with one O(3)Li3Mn2Cu octahedra, edges with two equivalent O(7)Li3MnCu2 octahedra, edges with two equivalent O(8)Li3MnCu2 octahedra, edges with three equivalent O(1)Li3Mn2Cu octahedra, and edges with three equivalent O(4)Li3Mn2Cu octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the seventh O site, O(7) is bonded to one Li(1), one Li(2), one Li(4), one Mn(2), and two equivalent Cu(2) atoms to form OLi3MnCu2 octahedra that share  a cornercorner with one O(5)Li3MnCu2 octahedra,  a cornercorner with one O(6)Li3MnCu2 octahedra, corners with two equivalent O(7)Li3MnCu2 octahedra, corners with two equivalent O(8)Li3MnCu2 octahedra,  an edgeedge with one O(2)Li3Mn2Cu octahedra,  an edgeedge with one O(4)Li3Mn2Cu octahedra, edges with two equivalent O(5)Li3MnCu2 octahedra, edges with two equivalent O(6)Li3MnCu2 octahedra, edges with three equivalent O(1)Li3Mn2Cu octahedra, and edges with three equivalent O(3)Li3Mn2Cu octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the eighth O site, O(8) is bonded to one Li(1), one Li(2), one Li(3), one Mn(1), and two equivalent Cu(1) atoms to form OLi3MnCu2 octahedra that share  a cornercorner with one O(5)Li3MnCu2 octahedra,  a cornercorner with one O(6)Li3MnCu2 octahedra, corners with two equivalent O(7)Li3MnCu2 octahedra, corners with two equivalent O(8)Li3MnCu2 octahedra,  an edgeedge with one O(1)Li3Mn2Cu octahedra,  an edgeedge with one O(3)Li3Mn2Cu octahedra, edges with two equivalent O(5)Li3MnCu2 octahedra, edges with two equivalent O(6)Li3MnCu2 octahedra, edges with three equivalent O(2)Li3Mn2Cu octahedra, and edges with three equivalent O(4)Li3Mn2Cu octahedra. The corner-sharing octahedral tilt angles range from 0-9°.