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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on KO2F by Materials Project

(KOF)2O2 crystallizes in the orthorhombic Pmc2_1 space group. The structure is three-dimensional and consists of two water molecules and one KOF framework. In the KOF framework, K is bonded in a 6-coordinate geometry to three equivalent O and four equivalent F atoms. There are a spread of K–O bond distances ranging from 2.84–3.08 Å. There are two shorter (2.64 Å) and two longer (2.67 Å) K–F bond lengths. O is bonded in a 2-coordinate geometry to three equivalent K atoms. F is bonded in a distorted square co-planar geometry to four equivalent K atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on KO4F by Materials Project

KO4F crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. K is bonded in a 2-coordinate geometry to seven O and two equivalent F atoms. There are a spread of K–O bond distances ranging from 2.97–3.33 Å. There are one shorter (2.48 Å) and one longer (2.49 Å) K–F bond lengths. There are four inequivalent O sites. In the first O site, O is bonded in a trigonal planar geometry to two equivalent K and one O atom. The O–O bond length is 1.24 Å. In the second O site, O is bonded in a distorted trigonal non-coplanar geometry to two equivalent K and one O atom. The O–O bond length is 1.24 Å. In the third O site, O is bonded in a bent 120 degrees geometry to one K and one O atom. In the fourth O site, O is bonded in a 3-coordinate geometry to two equivalent K and one O atom. F is bonded in a bent 120 degrees geometry to two equivalent K atoms.

36 MATERIALS SCIENCE↗