Search NASA⌕ Search

SEARCH · Search NASA

Results for “F-H-N-Si”

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 SiH8(NF3)2 by Materials Project

(NH4)2SiF6 is Silicon tetrafluoride-derived structured and crystallizes in the hexagonal P6_3mc space group. The structure is zero-dimensional and consists of four ammonium molecules and two SiF6 clusters. In each SiF6 cluster, Si4+ is bonded in an octahedral geometry to six F1- atoms. There is three shorter (1.72 Å) and three longer (1.73 Å) Si–F bond length. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Si4+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Si4+ atom.

36 MATERIALS SCIENCE↗