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Results for “C-F-K-O”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on K3CO3F by Materials Project

K3CO3F crystallizes in the trigonal R-3c space group. The structure is three-dimensional. K1+ is bonded to five equivalent O2- and two equivalent F1- atoms to form a mixture of distorted face, edge, and corner-sharing KO5F2 pentagonal bipyramids. There are a spread of K–O bond distances ranging from 2.81–3.05 Å. Both K–F bond lengths are 2.64 Å. C4+ is bonded in a trigonal planar geometry to three equivalent O2- atoms. All C–O bond lengths are 1.31 Å. O2- is bonded in a distorted single-bond geometry to five equivalent K1+ and one C4+ atom. F1- is bonded to six equivalent K1+ atoms to form corner-sharing FK6 octahedra. The corner-sharing octahedral tilt angles are 25°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KC4(OF)2 by Materials Project

KC2O2FCCF crystallizes in the monoclinic P2/c space group. The structure is two-dimensional and consists of four fluoromethane molecules; four methane molecules; and one KC2O2F sheet oriented in the (0, 1, 0) direction. In the KC2O2F sheet, K1+ is bonded in a 7-coordinate geometry to six O2- and one F1- atom. There are a spread of K–O bond distances ranging from 2.69–2.94 Å. The K–F bond length is 2.86 Å. There are two inequivalent C+1.25+ sites. In the first C+1.25+ site, C+1.25+ is bonded in a single-bond geometry to one F1- atom. The C–F bond length is 1.35 Å. In the second C+1.25+ site, C+1.25+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.26 Å) and one longer (1.27 Å) C–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one C+1.25+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent K1+ and one C+1.25+ atom. F1- is bonded in a distorted single-bond geometry to one K1+ and one C+1.25+ atom.

36 MATERIALS SCIENCE↗