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Results for “F-H-N-Si”

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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on SiH6(NF2)2 by Materials Project

Si(NH3)2F4 is alpha Po structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of two Si(NH3)2F4 clusters. Si4+ is bonded in an octahedral geometry to two equivalent N3- and four F1- atoms. Both Si–N bond lengths are 1.92 Å. There is two shorter (1.70 Å) and two longer (1.72 Å) Si–F bond length. N3- is bonded in a distorted trigonal non-coplanar geometry to one Si4+ and three H1+ atoms. All N–H bond lengths are 1.03 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. 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↗
DOE OSTI2020

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↗
DOE OSTI2020

Materials Data on SiH6(NF3)2 by Materials Project

SiH6(NF3)2 is Copper structured and crystallizes in the orthorhombic Pbca space group. The structure is zero-dimensional and consists of four SiH6(NF3)2 clusters. Si4+ is bonded in an octahedral geometry to six F1- atoms. There is two shorter (1.70 Å) and four longer (1.73 Å) Si–F bond length. N2- is bonded in a trigonal non-coplanar geometry to three H1+ atoms. There are a spread of N–H bond distances ranging from 1.04–1.06 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N2- and one F1- atom. The H–F bond length is 1.63 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted bent 120 degrees geometry to one Si4+ and one H1+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Si4+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Si4+ atom.

36 MATERIALS SCIENCE↗