LiMn2(PO4)2 crystallizes in the monoclinic P2_1 space group. Li(1) is bonded to one O(2), one O(5), one O(7), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Mn(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent Mn(1)O5 trigonal bipyramids. 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(7) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. In the second Mn site, Mn(2) is bonded to one O(3), one O(5), one O(6), and one O(8) atom to form MnO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  a cornercorner with one Mn(1)O5 trigonal bipyramid. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. In the second P site, P(2) is bonded to one O(1), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra, and corners with two equivalent Mn(1)O5 trigonal bipyramids. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Mn(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one P(1) atom. In the fourth O site, O(4) is bonded in an L-shaped geometry to one Mn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(1), one Mn(2), and one P(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mn(2) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Mn(1), and one P(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Li(1), one Mn(2), and one P(2) atom.
LiMn2(PO4)2 crystallizes in the monoclinic P2_1 space group. Li(1) is bonded to one O(2), one O(5), one O(7), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Mn(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent Mn(1)O5 trigonal bipyramids. The Li(1)-O(2) bond length is 2.04 Å. The Li(1)-O(5) bond length is 2.03 Å. The Li(1)-O(7) bond length is 2.08 Å. The Li(1)-O(8) bond length is 2.00 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(7) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Mn(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(1)O4 tetrahedra. The Mn(1)-O(1) bond length is 1.93 Å. The Mn(1)-O(2) bond length is 2.04 Å. The Mn(1)-O(3) bond length is 2.08 Å. The Mn(1)-O(4) bond length is 2.03 Å. The Mn(1)-O(7) bond length is 2.11 Å. In the second Mn site, Mn(2) is bonded to one O(3), one O(5), one O(6), and one O(8) atom to form MnO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  a cornercorner with one Mn(1)O5 trigonal bipyramid. The Mn(2)-O(3) bond length is 2.14 Å. The Mn(2)-O(5) bond length is 2.11 Å. The Mn(2)-O(6) bond length is 1.99 Å. The Mn(2)-O(8) bond length is 2.06 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra,  a cornercorner with one Mn(1)O5 trigonal bipyramid, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. The P(1)-O(2) bond length is 1.55 Å. The P(1)-O(3) bond length is 1.60 Å. The P(1)-O(4) bond length is 1.55 Å. The P(1)-O(5) bond length is 1.54 Å. In the second P site, P(2) is bonded to one O(1), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Mn(2)O4 tetrahedra, and corners with two equivalent Mn(1)O5 trigonal bipyramids. The P(2)-O(1) bond length is 1.58 Å. The P(2)-O(6) bond length is 1.53 Å. The P(2)-O(7) bond length is 1.57 Å. The P(2)-O(8) bond length is 1.55 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Mn(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one P(1) atom. In the fourth O site, O(4) is bonded in an L-shaped geometry to one Mn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Li(1), one Mn(2), and one P(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mn(2) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Mn(1), and one P(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Li(1), one Mn(2), and one P(2) atom.