LiMnPO4(OH) crystallizes in the triclinic P-1 space group. Li(1) is bonded to one O(1), one O(3), one O(4), and two equivalent O(5) atoms to form distorted LiO5 square pyramids that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, edges with two equivalent Mn(2)O6 octahedra,  an edgeedge with one Li(1)O5 square pyramid, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-64°. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with four equivalent Li(1)O5 square pyramids, and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent P(1)O4 tetrahedra, and edges with four equivalent Li(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 51°. 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 Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Li(1)O5 square pyramids, and  an edgeedge with one Li(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 40-55°. H(1) is bonded in a single-bond geometry to one O(1) and one O(2) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Li(1), one Mn(1), one Mn(2), and one H(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one P(1), and one H(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Mn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Li(1), one Mn(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(1), one Mn(2), and one P(1) atom.
LiMnPO4(OH) crystallizes in the triclinic P-1 space group. Li(1) is bonded to one O(1), one O(3), one O(4), and two equivalent O(5) atoms to form distorted LiO5 square pyramids that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent P(1)O4 tetrahedra, edges with two equivalent Mn(2)O6 octahedra,  an edgeedge with one Li(1)O5 square pyramid, and  an edgeedge with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-64°. The Li(1)-O(1) bond length is 2.07 Å. The Li(1)-O(3) bond length is 2.12 Å. The Li(1)-O(4) bond length is 2.16 Å. There is one shorter (2.01 Å) and one longer (2.11 Å) Li(1)-O(5) bond length. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with four equivalent Li(1)O5 square pyramids, and corners with four equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. Both Mn(1)-O(1) bond lengths are 2.00 Å. Both Mn(1)-O(2) bond lengths are 2.25 Å. Both Mn(1)-O(3) bond lengths are 1.96 Å. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent P(1)O4 tetrahedra, and edges with four equivalent Li(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 51°. Both Mn(2)-O(1) bond lengths are 2.01 Å. Both Mn(2)-O(4) bond lengths are 1.92 Å. Both Mn(2)-O(5) bond lengths are 2.22 Å. 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 Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Li(1)O5 square pyramids, and  an edgeedge with one Li(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 40-55°. The P(1)-O(2) bond length is 1.54 Å. The P(1)-O(3) bond length is 1.57 Å. The P(1)-O(4) bond length is 1.57 Å. The P(1)-O(5) bond length is 1.54 Å. H(1) is bonded in a single-bond geometry to one O(1) and one O(2) atom. The H(1)-O(1) bond length is 1.01 Å. The H(1)-O(2) bond length is 1.71 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Li(1), one Mn(1), one Mn(2), and one H(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one P(1), and one H(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Mn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Li(1), one Mn(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li(1), one Mn(2), and one P(1) atom.