LiMn(PO3)4 crystallizes in the monoclinic C2/m space group. Li(1) is bonded in an L-shaped geometry to two equivalent O(6) atoms. Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra and corners with four equivalent P(1)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-50°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 43°. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(1) atom. In the third O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one P(2) atom. In the fourth O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent P(2) atoms. In the fifth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one P(1) atom. In the sixth O site, O(5) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to one Li(1) and one P(2) atom.
LiMn(PO3)4 crystallizes in the monoclinic C2/m space group. Li(1) is bonded in an L-shaped geometry to two equivalent O(6) atoms. Both Li(1)-O(6) bond lengths are 1.93 Å. Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent P(2)O4 tetrahedra and corners with four equivalent P(1)O4 tetrahedra. Both Mn(1)-O(1) bond lengths are 1.95 Å. Both Mn(1)-O(2) bond lengths are 1.98 Å. Both Mn(1)-O(4) bond lengths are 2.16 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-50°. The P(1)-O(1) bond length is 1.52 Å. The P(1)-O(4) bond length is 1.49 Å. The P(1)-O(5) bond length is 1.61 Å. The P(1)-O(7) bond length is 1.60 Å. In the second P site, P(2) is bonded to one O(2), one O(3), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 43°. The P(2)-O(2) bond length is 1.52 Å. The P(2)-O(3) bond length is 1.62 Å. The P(2)-O(6) bond length is 1.48 Å. The P(2)-O(7) bond length is 1.61 Å. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(1) and one P(1) atom. In the third O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one P(2) atom. In the fourth O site, O(3) is bonded in a bent 120 degrees geometry to two equivalent P(2) atoms. In the fifth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one P(1) atom. In the sixth O site, O(5) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to one Li(1) and one P(2) atom.