LiMnAsO5 crystallizes in the triclinic P-1 space group. Li(1) is bonded in a 4-coordinate geometry to one O(2), one O(3), one O(4), and one O(5) atom. There are two inequivalent Mn sites. In the first Mn site, Mn(1) 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(2)O6 octahedra and corners with four equivalent As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. In the second Mn site, Mn(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with four equivalent As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one As(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Mn(2), and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Mn(2), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one Mn(1), and one As(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Mn(1), and one Mn(2) atom.
LiMnAsO5 crystallizes in the triclinic P-1 space group. Li(1) is bonded in a 4-coordinate geometry to one O(2), one O(3), one O(4), and one O(5) atom. The Li(1)-O(2) bond length is 2.05 Å. The Li(1)-O(3) bond length is 2.11 Å. The Li(1)-O(4) bond length is 2.09 Å. The Li(1)-O(5) bond length is 1.95 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) 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(2)O6 octahedra and corners with four equivalent As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. Both Mn(1)-O(1) bond lengths are 1.92 Å. Both Mn(1)-O(4) bond lengths are 1.98 Å. Both Mn(1)-O(5) bond lengths are 1.88 Å. In the second Mn site, Mn(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with four equivalent As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 41°. Both Mn(2)-O(2) bond lengths are 1.97 Å. Both Mn(2)-O(3) bond lengths are 1.96 Å. Both Mn(2)-O(5) bond lengths are 1.89 Å. As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. The As(1)-O(1) bond length is 1.72 Å. The As(1)-O(2) bond length is 1.73 Å. The As(1)-O(3) bond length is 1.73 Å. The As(1)-O(4) bond length is 1.73 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one As(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Li(1), one Mn(2), and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Mn(2), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one Mn(1), and one As(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Mn(1), and one Mn(2) atom.