Search NASA⌕ Search

SEARCH · Search NASA

Results for “F-O-U”

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.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

4 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on UOF4 by Materials Project

UOF4 crystallizes in the tetragonal I-42d space group. The structure is three-dimensional. U6+ is bonded to one O2- and six F1- atoms to form distorted corner-sharing UOF6 pentagonal bipyramids. The U–O bond length is 1.82 Å. There are a spread of U–F bond distances ranging from 2.03–2.51 Å. O2- is bonded in a single-bond geometry to one U6+ atom. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a 1-coordinate geometry to two equivalent U6+ atoms. In the second F1- site, F1- is bonded in a single-bond geometry to one U6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U(OF)2 by Materials Project

UO2F2 crystallizes in the trigonal R-3m space group. The structure is two-dimensional and consists of three UO2F2 sheets oriented in the (0, 0, 1) direction. U6+ is bonded to two equivalent O2- and six equivalent F1- atoms to form distorted edge-sharing UO2F6 hexagonal bipyramids. Both U–O bond lengths are 1.78 Å. All U–F bond lengths are 2.45 Å. O2- is bonded in a single-bond geometry to one U6+ atom. F1- is bonded in a trigonal planar geometry to three equivalent U6+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on UOF4 by Materials Project

UOF4 crystallizes in the trigonal R3m space group. The structure is three-dimensional. U6+ is bonded to one O2- and six F1- atoms to form corner-sharing UOF6 pentagonal bipyramids. The U–O bond length is 1.80 Å. There are a spread of U–F bond distances ranging from 1.97–2.32 Å. O2- is bonded in a single-bond geometry to one U6+ atom. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent U6+ atoms. In the second F1- site, F1- is bonded in a single-bond geometry to one U6+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one U6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U(OF)2 by Materials Project

UO2F2 crystallizes in the monoclinic C2/m space group. The structure is one-dimensional and consists of two UO2F2 ribbons oriented in the (0, 1, 0) direction. U6+ is bonded to four equivalent O2- and two equivalent F1- atoms to form distorted edge-sharing UO4F2 octahedra. All U–O bond lengths are 2.08 Å. Both U–F bond lengths are 2.09 Å. O2- is bonded in a distorted water-like geometry to two equivalent U6+ atoms. F1- is bonded in a single-bond geometry to one U6+ atom.

36 MATERIALS SCIENCE↗