Search NASA⌕ Search

SEARCH · Search NASA

Results for “Ir-Pu”

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.

Materials Data on Pu5Ir4 by Materials Project

Pu5Ir4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are three inequivalent Pu sites. In the first Pu site, Pu is bonded in a 6-coordinate geometry to six Ir atoms. There are a spread of Pu–Ir bond distances ranging from 2.63–3.20 Å. In the second Pu site, Pu is bonded in a 6-coordinate geometry to six Ir atoms. There are a spread of Pu–Ir bond distances ranging from 2.67–2.91 Å. In the third Pu site, Pu is bonded in a 7-coordinate geometry to seven Ir atoms. There are a spread of Pu–Ir bond distances ranging from 2.77–3.23 Å. There are three inequivalent Ir sites. In the first Ir site, Ir is bonded in a 5-coordinate geometry to eight Pu and one Ir atom. The Ir–Ir bond length is 2.78 Å. In the second Ir site, Ir is bonded in a 9-coordinate geometry to eight Pu and one Ir atom. In the third Ir site, Ir is bonded in a 5-coordinate geometry to eight Pu and one Ir atom. The Ir–Ir bond length is 2.91 Å.

36 MATERIALS SCIENCE↗

Materials Data on PuIr2 by Materials Project

PuIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Pu is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Pu–Ir bond lengths are 3.10 Å. Ir is bonded to six equivalent Pu and six equivalent Ir atoms to form a mixture of edge, face, and corner-sharing IrPu6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.64 Å.

36 MATERIALS SCIENCE↗

Materials Data on Pu5Ir3 by Materials Project

Pu5Ir3 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent Pu sites. In the first Pu site, Pu is bonded in a 4-coordinate geometry to four equivalent Ir atoms. All Pu–Ir bond lengths are 2.94 Å. In the second Pu site, Pu is bonded in a 6-coordinate geometry to six Ir atoms. There are a spread of Pu–Ir bond distances ranging from 2.89–3.20 Å. There are two inequivalent Ir sites. In the first Ir site, Ir is bonded in a 10-coordinate geometry to eight equivalent Pu and two equivalent Ir atoms. Both Ir–Ir bond lengths are 2.79 Å. In the second Ir site, Ir is bonded in a 10-coordinate geometry to ten Pu atoms.

36 MATERIALS SCIENCE↗

Materials Data on Pu4Ir by Materials Project

Pu4Ir is Iron carbide-like structured and crystallizes in the cubic Fd-3m space group. The structure is zero-dimensional and consists of eight Pu4Ir clusters. Pu is bonded in a single-bond geometry to one Ir atom. The Pu–Ir bond length is 2.60 Å. Ir is bonded in a tetrahedral geometry to four equivalent Pu atoms.

36 MATERIALS SCIENCE↗