LiMn2(BO3)2 crystallizes in the monoclinic Cc space group. Li(1) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(2)O5 trigonal bipyramid,  an edgeedge with one Mn(1)O5 trigonal bipyramid, and  an edgeedge with one Mn(2)O5 trigonal bipyramid. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form MnO5 trigonal bipyramids that share  a cornercorner with one Li(1)O4 trigonal pyramid, edges with two equivalent Mn(2)O5 trigonal bipyramids, and  an edgeedge with one Li(1)O4 trigonal pyramid. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Li(1)O4 trigonal pyramid, edges with two equivalent Mn(1)O5 trigonal bipyramids, and  an edgeedge with one Li(1)O4 trigonal pyramid. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(6) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(1), one O(4), and one O(5) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one B(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one B(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Li(1), one Mn(1), one Mn(2), and one B(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Li(1), one Mn(1), one Mn(2), and one B(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Li(1), one Mn(1), and one B(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(1), one Mn(2), and one B(1) atom.
LiMn2(BO3)2 crystallizes in the monoclinic Cc space group. Li(1) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(2)O5 trigonal bipyramid,  an edgeedge with one Mn(1)O5 trigonal bipyramid, and  an edgeedge with one Mn(2)O5 trigonal bipyramid. The Li(1)-O(3) bond length is 2.09 Å. The Li(1)-O(4) bond length is 2.16 Å. The Li(1)-O(5) bond length is 1.89 Å. The Li(1)-O(6) bond length is 1.89 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(3), one O(4), and one O(5) atom to form MnO5 trigonal bipyramids that share  a cornercorner with one Li(1)O4 trigonal pyramid, edges with two equivalent Mn(2)O5 trigonal bipyramids, and  an edgeedge with one Li(1)O4 trigonal pyramid. The Mn(1)-O(1) bond length is 1.98 Å. The Mn(1)-O(2) bond length is 1.97 Å. The Mn(1)-O(3) bond length is 2.01 Å. The Mn(1)-O(4) bond length is 1.99 Å. The Mn(1)-O(5) bond length is 2.11 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Li(1)O4 trigonal pyramid, edges with two equivalent Mn(1)O5 trigonal bipyramids, and  an edgeedge with one Li(1)O4 trigonal pyramid. The Mn(2)-O(1) bond length is 2.08 Å. The Mn(2)-O(2) bond length is 2.18 Å. The Mn(2)-O(3) bond length is 2.21 Å. The Mn(2)-O(4) bond length is 2.21 Å. The Mn(2)-O(6) bond length is 2.05 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(6) atom. The B(1)-O(2) bond length is 1.40 Å. The B(1)-O(3) bond length is 1.43 Å. The B(1)-O(6) bond length is 1.34 Å. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(1), one O(4), and one O(5) atom. The B(2)-O(1) bond length is 1.40 Å. The B(2)-O(4) bond length is 1.42 Å. The B(2)-O(5) bond length is 1.35 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one B(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(2), and one B(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Li(1), one Mn(1), one Mn(2), and one B(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Li(1), one Mn(1), one Mn(2), and one B(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Li(1), one Mn(1), and one B(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Li(1), one Mn(2), and one B(1) atom.