Li2MnO2 crystallizes in the trigonal P-3m1 space group. Li(1) is bonded to four equivalent O(1) atoms to form LiO4 tetrahedra that share corners with six equivalent Mn(1)O6 octahedra, corners with six equivalent Li(1)O4 tetrahedra, edges with three equivalent Mn(1)O6 octahedra, and edges with three equivalent Li(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-55°. Mn(1) is bonded to six equivalent O(1) atoms to form MnO6 octahedra that share corners with twelve equivalent Li(1)O4 tetrahedra, edges with six equivalent Mn(1)O6 octahedra, and edges with six equivalent Li(1)O4 tetrahedra. O(1) is bonded in a 7-coordinate geometry to four equivalent Li(1) and three equivalent Mn(1) atoms.
Li2MnO2 crystallizes in the trigonal P-3m1 space group. Li(1) is bonded to four equivalent O(1) atoms to form LiO4 tetrahedra that share corners with six equivalent Mn(1)O6 octahedra, corners with six equivalent Li(1)O4 tetrahedra, edges with three equivalent Mn(1)O6 octahedra, and edges with three equivalent Li(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-55°. There are three shorter (1.94 Å) and one longer (2.01 Å) Li(1)-O(1) bond length. Mn(1) is bonded to six equivalent O(1) atoms to form MnO6 octahedra that share corners with twelve equivalent Li(1)O4 tetrahedra, edges with six equivalent Mn(1)O6 octahedra, and edges with six equivalent Li(1)O4 tetrahedra. All Mn(1)-O(1) bond lengths are 2.24 Å. O(1) is bonded in a 7-coordinate geometry to four equivalent Li(1) and three equivalent Mn(1) atoms.