Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “UF3”

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.

5 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on UF3 by Materials Project

UF3 crystallizes in the hexagonal P6_3cm space group. The structure is three-dimensional. U3+ is bonded in a 10-coordinate geometry to ten F1- atoms. There are a spread of U–F bond distances ranging from 2.41–2.83 Å. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a 2-coordinate geometry to four equivalent U3+ atoms. In the second F1- site, F1- is bonded in a distorted trigonal planar geometry to three equivalent U3+ atoms. In the third F1- site, F1- is bonded in a trigonal planar geometry to three equivalent U3+ atoms. In the fourth F1- site, F1- is bonded in a distorted trigonal planar geometry to three equivalent U3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on UF3 by Materials Project

UF3 is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. U3+ is bonded to twelve F1- atoms to form a mixture of corner, edge, and face-sharing UF12 cuboctahedra. There are eight shorter (2.55 Å) and four longer (2.63 Å) U–F bond lengths. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a 4-coordinate geometry to four equivalent U3+ atoms. In the second F1- site, F1- is bonded in a distorted square co-planar geometry to four equivalent U3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on UF3 by Materials Project

UF3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. U3+ is bonded in a distorted body-centered cubic geometry to fourteen F1- atoms. There are eight shorter (2.52 Å) and six longer (2.91 Å) U–F bond lengths. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded to four equivalent U3+ and four equivalent F1- atoms to form a mixture of corner, edge, and face-sharing FU4F4 tetrahedra. All F–F bond lengths are 2.52 Å. In the second F1- site, F1- is bonded in a 6-coordinate geometry to six equivalent U3+ and eight equivalent F1- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on UF3 by Materials Project

UF3 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. U3+ is bonded in a body-centered cubic geometry to eight F1- atoms. There are two shorter (2.32 Å) and six longer (2.47 Å) U–F bond lengths. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted trigonal planar geometry to three equivalent U3+ atoms. In the second F1- site, F1- is bonded in a linear geometry to two equivalent U3+ atoms.

36 MATERIALS SCIENCE↗