Li2Mn2(SO4)3 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(4), and two equivalent O(2) atoms. Mn(1) is bonded to one O(1), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent S(2)O4 tetrahedra, corners with four equivalent S(1)O4 tetrahedra, and  an edgeedge with one Mn(1)O6 octahedra. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(2), one O(3), one O(4), and one O(6) atom to form SO4 tetrahedra that share corners with four equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-55°. In the second S site, S(2) is bonded to two equivalent O(1) and two equivalent O(5) atoms to form SO4 tetrahedra that share corners with four equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 16-36°. There are six inequivalent O sites. In the first O site, O(4) is bonded in a 4-coordinate geometry to one Li(1), two equivalent Mn(1), and one S(1) atom. In the second O site, O(5) is bonded in a linear geometry to one Mn(1) and one S(2) atom. In the third O site, O(6) is bonded in a bent 150 degrees geometry to one Mn(1) and one S(1) atom. In the fourth O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Mn(1), and one S(2) atom. In the fifth O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Li(1) and one S(1) atom. In the sixth O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Mn(1), and one S(1) atom.
Li2Mn2(SO4)3 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(4), and two equivalent O(2) atoms. The Li(1)-O(1) bond length is 2.22 Å. The Li(1)-O(3) bond length is 2.09 Å. The Li(1)-O(4) bond length is 2.50 Å. There is one shorter (1.99 Å) and one longer (2.01 Å) Li(1)-O(2) bond length. Mn(1) is bonded to one O(1), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent S(2)O4 tetrahedra, corners with four equivalent S(1)O4 tetrahedra, and  an edgeedge with one Mn(1)O6 octahedra. The Mn(1)-O(1) bond length is 2.18 Å. The Mn(1)-O(3) bond length is 2.23 Å. The Mn(1)-O(5) bond length is 2.11 Å. The Mn(1)-O(6) bond length is 2.10 Å. There is one shorter (2.25 Å) and one longer (2.34 Å) Mn(1)-O(4) bond length. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(2), one O(3), one O(4), and one O(6) atom to form SO4 tetrahedra that share corners with four equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-55°. The S(1)-O(2) bond length is 1.48 Å. The S(1)-O(3) bond length is 1.49 Å. The S(1)-O(4) bond length is 1.52 Å. The S(1)-O(6) bond length is 1.46 Å. In the second S site, S(2) is bonded to two equivalent O(1) and two equivalent O(5) atoms to form SO4 tetrahedra that share corners with four equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 16-36°. Both S(2)-O(1) bond lengths are 1.50 Å. Both S(2)-O(5) bond lengths are 1.47 Å. There are six inequivalent O sites. In the first O site, O(4) is bonded in a 4-coordinate geometry to one Li(1), two equivalent Mn(1), and one S(1) atom. In the second O site, O(5) is bonded in a linear geometry to one Mn(1) and one S(2) atom. In the third O site, O(6) is bonded in a bent 150 degrees geometry to one Mn(1) and one S(1) atom. In the fourth O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Mn(1), and one S(2) atom. In the fifth O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Li(1) and one S(1) atom. In the sixth O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Mn(1), and one S(1) atom.