Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “USe3”

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.

2 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on USe3 by Materials Project

USe3 crystallizes in the monoclinic P2_1/m space group. The structure is two-dimensional and consists of one USe3 sheet oriented in the (0, 0, 1) direction. U6+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of U–Se bond distances ranging from 2.89–2.96 Å. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 2-coordinate geometry to two equivalent U6+ and one Se2- atom. The Se–Se bond length is 2.38 Å. In the second Se2- site, Se2- is bonded to four equivalent U6+ atoms to form a mixture of distorted edge and corner-sharing SeU4 trigonal pyramids. In the third Se2- site, Se2- is bonded in a 2-coordinate geometry to two equivalent U6+ and one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K(USe3)2 by Materials Project

K(USe3)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. K1+ is bonded in a distorted body-centered cubic geometry to eight Se2- atoms. There are four shorter (3.42 Å) and four longer (3.44 Å) K–Se bond lengths. U+5.50+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of U–Se bond distances ranging from 2.88–2.95 Å. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to four equivalent U+5.50+ atoms to form a mixture of distorted edge and corner-sharing SeU4 trigonal pyramids. In the second Se2- site, Se2- is bonded in a 4-coordinate geometry to two equivalent K1+ and two equivalent U+5.50+ atoms. In the third Se2- site, Se2- is bonded in a 4-coordinate geometry to two equivalent K1+ and two equivalent U+5.50+ atoms.

36 MATERIALS SCIENCE↗