Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Al-H-Rb”

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 RbAlH4 by Materials Project

RbAlH4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Rb1+ is bonded in a 8-coordinate geometry to eight H1- atoms. There are a spread of Rb–H bond distances ranging from 2.92–3.15 Å. Al3+ is bonded in a tetrahedral geometry to four H1- atoms. There is two shorter (1.63 Å) and two longer (1.64 Å) Al–H bond length. There are three inequivalent H1- sites. In the first H1- site, H1- is bonded in a distorted single-bond geometry to three equivalent Rb1+ and one Al3+ atom. In the second H1- site, H1- is bonded in a distorted single-bond geometry to one Rb1+ and one Al3+ atom. In the third H1- site, H1- is bonded in a distorted single-bond geometry to one Rb1+ and one Al3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on RbAlH4 by Materials Project

RbAlH4 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. Rb1+ is bonded in a 8-coordinate geometry to eight H1- atoms. There are a spread of Rb–H bond distances ranging from 2.71–3.17 Å. Al3+ is bonded to five H1- atoms to form corner-sharing AlH5 trigonal bipyramids. There are a spread of Al–H bond distances ranging from 1.62–1.91 Å. There are four inequivalent H1- sites. In the first H1- site, H1- is bonded in a distorted single-bond geometry to three equivalent Rb1+ and one Al3+ atom. In the second H1- site, H1- is bonded in a linear geometry to one Rb1+ and two equivalent Al3+ atoms. In the third H1- site, H1- is bonded in a distorted single-bond geometry to two equivalent Rb1+ and one Al3+ atom. In the fourth H1- site, H1- is bonded in a distorted single-bond geometry to two equivalent Rb1+ and one Al3+ atom.

36 MATERIALS SCIENCE↗