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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on SrLiAlF6 by Materials Project

LiSrAlF6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Li1+ is bonded in a 5-coordinate geometry to five F1- atoms. There are a spread of Li–F bond distances ranging from 1.91–2.45 Å. Sr2+ is bonded in a 9-coordinate geometry to nine F1- atoms. There are a spread of Sr–F bond distances ranging from 2.40–3.00 Å. Al3+ is bonded in an octahedral geometry to six F1- atoms. There are a spread of Al–F bond distances ranging from 1.79–1.88 Å. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a 1-coordinate geometry to one Li1+, one Sr2+, and one Al3+ atom. In the second F1- site, F1- is bonded in a 2-coordinate geometry to one Li1+, two equivalent Sr2+, and one Al3+ atom. In the third F1- site, F1- is bonded in a distorted water-like geometry to one Li1+, one Sr2+, and one Al3+ atom. In the fourth F1- site, F1- is bonded in a distorted bent 150 degrees geometry to one Li1+, one Sr2+, and one Al3+ atom. In the fifth F1- site, F1- is bonded in a 1-coordinate geometry to two equivalent Sr2+ and one Al3+ atom. In the sixth F1- site, F1- is bonded in a 4-coordinate geometry to one Li1+, two equivalent Sr2+, and one Al3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrLiAlF6 by Materials Project

LiSrAlF6 is zeta iron carbide-derived structured and crystallizes in the trigonal P-31c space group. The structure is three-dimensional. Li1+ is bonded to six equivalent F1- atoms to form LiF6 octahedra that share corners with six equivalent SrF6 octahedra and edges with three equivalent AlF6 octahedra. The corner-sharing octahedral tilt angles are 58°. All Li–F bond lengths are 2.06 Å. Sr2+ is bonded to six equivalent F1- atoms to form SrF6 octahedra that share corners with six equivalent LiF6 octahedra and corners with six equivalent AlF6 octahedra. The corner-sharing octahedra tilt angles range from 47–58°. All Sr–F bond lengths are 2.46 Å. Al3+ is bonded to six equivalent F1- atoms to form AlF6 octahedra that share corners with six equivalent SrF6 octahedra and edges with three equivalent LiF6 octahedra. The corner-sharing octahedral tilt angles are 47°. All Al–F bond lengths are 1.83 Å. F1- is bonded in a distorted trigonal planar geometry to one Li1+, one Sr2+, and one Al3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrLiAlF6 by Materials Project

LiSrAlF6 is zeta iron carbide-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Li1+ is bonded to six F1- atoms to form LiF6 octahedra that share corners with six equivalent SrF6 octahedra and edges with three equivalent AlF6 octahedra. The corner-sharing octahedra tilt angles range from 55–62°. There are a spread of Li–F bond distances ranging from 2.02–2.11 Å. Sr2+ is bonded to six F1- atoms to form SrF6 octahedra that share corners with six equivalent LiF6 octahedra and corners with six equivalent AlF6 octahedra. The corner-sharing octahedra tilt angles range from 40–62°. There are a spread of Sr–F bond distances ranging from 2.45–2.47 Å. Al3+ is bonded to six F1- atoms to form AlF6 octahedra that share corners with six equivalent SrF6 octahedra and edges with three equivalent LiF6 octahedra. The corner-sharing octahedra tilt angles range from 40–52°. There are a spread of Al–F bond distances ranging from 1.82–1.84 Å. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a 3-coordinate geometry to one Li1+, one Sr2+, and one Al3+ atom. In the second F1- site, F1- is bonded in a distorted trigonal planar geometry to one Li1+, one Sr2+, and one Al3+ atom. In the third F1- site, F1- is bonded in a distorted trigonal planar geometry to one Li1+, one Sr2+, and one Al3+ atom. In the fourth F1- site, F1- is bonded in a 3-coordinate geometry to one Li1+, one Sr2+, and one Al3+ atom. In the fifth F1- site, F1- is bonded in a 3-coordinate geometry to one Li1+, one Sr2+, and one Al3+ atom. In the sixth F1- site, F1- is bonded in a distorted trigonal planar geometry to one Li1+, one Sr2+, and one Al3+ atom.

36 MATERIALS SCIENCE↗