Materials Data on LiMnAsCO7 by Materials Project
LiMnCAsO7 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. Li1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 1.96–2.29 Å. Mn4+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with four equivalent AsO4 tetrahedra. There are a spread of Mn–O bond distances ranging from 1.90–1.99 Å. C4+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of C–O bond distances ranging from 1.23–1.33 Å. As5+ is bonded to four O2- atoms to form AsO4 tetrahedra that share corners with four equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 44–52°. There are a spread of As–O bond distances ranging from 1.71–1.73 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Li1+ and one C4+ atom. In the second O2- site, O2- is bonded in a distorted T-shaped geometry to one Li1+, one Mn4+, and one C4+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Mn4+, and one C4+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Mn4+ and one As5+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Mn4+, and one As5+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Mn4+, and one As5+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to one Mn4+ and one As5+ atom.