Search NASA⌕ Search

SEARCH · Search NASA

Results for “I-Sr”

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 SrI2 by Materials Project

SrI2 is Baddeleyite-like structured and crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. Sr2+ is bonded to seven I1- atoms to form a mixture of distorted edge and corner-sharing SrI7 pentagonal bipyramids. There are a spread of Sr–I bond distances ranging from 3.32–3.49 Å. There are two inequivalent I1- sites. In the first I1- site, I1- is bonded in a distorted trigonal planar geometry to three equivalent Sr2+ atoms. In the second I1- site, I1- is bonded to four equivalent Sr2+ atoms to form a mixture of distorted edge and corner-sharing ISr4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrI2 by Materials Project

SrI2 is Baddeleyite-like structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Sr2+ is bonded to seven I1- atoms to form a mixture of distorted corner and edge-sharing SrI7 pentagonal bipyramids. There are a spread of Sr–I bond distances ranging from 3.33–3.49 Å. There are two inequivalent I1- sites. In the first I1- site, I1- is bonded to four equivalent Sr2+ atoms to form a mixture of distorted corner and edge-sharing ISr4 trigonal pyramids. In the second I1- site, I1- is bonded in a trigonal non-coplanar geometry to three equivalent Sr2+ atoms.

36 MATERIALS SCIENCE↗