DOE OSTI2020
Li5V6O5F19 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are five inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 3-coordinate geometry to three F1- atoms. There are a spread of Li–F bond distances ranging from 1.86–1.99 Å. In the second Li1+ site, Li1+ is bonded in a 3-coordinate geometry to one O2- and four F1- atoms. The Li–O bond length is 2.24 Å. There are a spread of Li–F bond distances ranging from 1.85–2.68 Å. In the third Li1+ site, Li1+ is bonded in a 4-coordinate geometry to one O2- and four F1- atoms. The Li–O bond length is 2.06 Å. There are a spread of Li–F bond distances ranging from 1.86–2.65 Å. In the fourth Li1+ site, Li1+ is bonded in a 5-coordinate geometry to one O2- and four F1- atoms. The Li–O bond length is 2.12 Å. There are a spread of Li–F bond distances ranging from 1.91–2.57 Å. In the fifth Li1+ site, Li1+ is bonded in a 5-coordinate geometry to one O2- and four F1- atoms. The Li–O bond length is 2.27 Å. There are a spread of Li–F bond distances ranging from 1.84–2.67 Å. There are six inequivalent V4+ sites. In the first V4+ site, V4+ is bonded to two O2- and four F1- atoms to form corner-sharing VO2F4 octahedra. The corner-sharing octahedra tilt angles range from 25–33°. There is one shorter (1.71 Å) and one longer (1.96 Å) V–O bond length. There are a spread of V–F bond distances ranging from 1.88–2.04 Å. In the second V4+ site, V4+ is bonded to two O2- and four F1- atoms to form corner-sharing VO2F4 octahedra. The corner-sharing octahedra tilt angles range from 24–28°. There is one shorter (1.72 Å) and one longer (1.97 Å) V–O bond length. There are a spread of V–F bond distances ranging from 1.92–2.09 Å. In the third V4+ site, V4+ is bonded to one O2- and five F1- atoms to form corner-sharing VOF5 octahedra. The corner-sharing octahedra tilt angles range from 21–33°. The V–O bond length is 1.73 Å. There are a spread of V–F bond distances ranging from 1.84–2.04 Å. In the fourth V4+ site, V4+ is bonded to two O2- and four F1- atoms to form corner-sharing VO2F4 octahedra. The corner-sharing octahedra tilt angles range from 25–33°. There is one shorter (1.73 Å) and one longer (1.94 Å) V–O bond length. There are a spread of V–F bond distances ranging from 1.84–2.12 Å. In the fifth V4+ site, V4+ is bonded to one O2- and five F1- atoms to form corner-sharing VOF5 octahedra. The corner-sharing octahedra tilt angles range from 21–33°. The V–O bond length is 1.94 Å. There are a spread of V–F bond distances ranging from 1.74–1.97 Å. In the sixth V4+ site, V4+ is bonded to two O2- and four F1- atoms to form corner-sharing VO2F4 octahedra. The corner-sharing octahedra tilt angles range from 24–28°. There is one shorter (1.71 Å) and one longer (2.00 Å) V–O bond length. There are a spread of V–F bond distances ranging from 1.88–2.06 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two V4+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two V4+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two V4+ atoms. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two V4+ atoms. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+ and two V4+ atoms. There are nineteen inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 150 degrees geometry to two V4+ atoms. In the second F1- site, F1- is bonded in a bent 150 degrees geometry to two V4+ atoms. In the third F1- site, F1- is bonded in a 2-coordinate geometry to two Li1+ and one V4+ atom. In the fourth F1- site, F1- is bonded in a bent 150 degrees geometry to one Li1+ and one V4+ atom. In the fifth F1- site, F1- is bonded in a 2-coordinate geometry to two Li1+ and one V4+ atom. In the sixth F1- site, F1- is bonded in a trigonal planar geometry to two Li1+ and one V4+ atom. In the seventh F1- site, F1- is bonded in a water-like geometry to one Li1+ and one V4+ atom. In the eighth F1- site, F1- is bonded in a distorted trigonal planar geometry to two Li1+ and one V4+ atom. In the ninth F1- site, F1- is bonded in a distorted T-shaped geometry to one Li1+ and two V4+ atoms. In the tenth F1- site, F1- is bonded in a bent 150 degrees geometry to two V4+ atoms. In the eleventh F1- site, F1- is bonded in a bent 150 degrees geometry to two V4+ atoms. In the twelfth F1- site, F1- is bonded in a bent 150 degrees geometry to two V4+ atoms. In the thirteenth F1- site, F1- is bonded in a distorted trigonal planar geometry to two Li1+ and one V4+ atom. In the fourteenth F1- site, F1- is bonded in a distorted single-bond geometry to one V4+ atom. In the fifteenth F1- site, F1- is bonded in a distorted trigonal planar geometry to two Li1+ and one V4+ atom. In the sixteenth F1- site, F1- is bonded in a 2-coordinate geometry to two Li1+ and one V4+ atom. In the seventeenth F1- site, F1- is bonded in a single-bond geometry to one V4+ atom. In the eighteenth F1- site, F1- is bonded in a 2-coordinate geometry to two Li1+ and one V4+ atom. In the nineteenth F1- site, F1- is bonded in a bent 150 degrees geometry to two V4+ atoms.