Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “SiIr2”

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 SiIr2 by Materials Project

Ir2Si is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Ir sites. In the first Ir site, Ir is bonded in a 3-coordinate geometry to five equivalent Si atoms. There are a spread of Ir–Si bond distances ranging from 2.47–2.91 Å. In the second Ir site, Ir is bonded in a 4-coordinate geometry to five equivalent Si atoms. There are a spread of Ir–Si bond distances ranging from 2.41–2.93 Å. Si is bonded in a 10-coordinate geometry to ten Ir atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SiIr2 by Materials Project

Ir2Si crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Ir sites. In the first Ir site, Ir is bonded to six equivalent Ir and five equivalent Si atoms to form a mixture of distorted corner and face-sharing IrSi5Ir6 trigonal bipyramids. All Ir–Ir bond lengths are 2.79 Å. There are three shorter (2.42 Å) and two longer (2.75 Å) Ir–Si bond lengths. In the second Ir site, Ir is bonded in a 6-coordinate geometry to eight Ir and six equivalent Si atoms. Both Ir–Ir bond lengths are 2.75 Å. All Ir–Si bond lengths are 2.79 Å. Si is bonded in a 11-coordinate geometry to eleven Ir atoms.

36 MATERIALS SCIENCE↗