Materials Data on Li3CuPO5 by Materials Project
Li3CuPO5 is beta beryllia-derived structured and crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. there are three inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with three equivalent CuO4 tetrahedra, corners with three equivalent PO4 tetrahedra, and corners with six LiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.91–2.04 Å. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share a cornercorner with one CuO4 tetrahedra, corners with four equivalent PO4 tetrahedra, and corners with seven LiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.99–2.03 Å. In the third Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with three equivalent PO4 tetrahedra, corners with four equivalent CuO4 tetrahedra, and corners with five LiO4 tetrahedra. There are a spread of Li–O bond distances ranging from 1.96–2.07 Å. Cu2+ is bonded to four O2- atoms to form CuO4 tetrahedra that share corners with two equivalent CuO4 tetrahedra, corners with two equivalent PO4 tetrahedra, and corners with eight LiO4 tetrahedra. There are a spread of Cu–O bond distances ranging from 1.84–2.15 Å. P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent CuO4 tetrahedra and corners with ten LiO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded to two Li1+ and two equivalent Cu2+ atoms to form corner-sharing OLi2Cu2 tetrahedra. In the second O2- site, O2- is bonded to three Li1+ and one P5+ atom to form distorted corner-sharing OLi3P tetrahedra. In the third O2- site, O2- is bonded to three Li1+ and one P5+ atom to form distorted corner-sharing OLi3P tetrahedra. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Li1+, one Cu2+, and one P5+ atom. In the fifth O2- site, O2- is bonded to two Li1+, one Cu2+, and one P5+ atom to form distorted corner-sharing OLi2CuP tetrahedra.