The Infrared and Raman Spectra of SiF4

Jones, E. A.; Kirby-Smith, John S.; Woltz, P. J. H.; Nielsen, Alvin H.

doi:10.1063/1.1748168

Cited by 88 publications

(13 citation statements)

References 6 publications

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“…Infrared and gas chromatographic examination of the reaction products showed only the presence of S2F40,17 (CN)2,23 SOF2,20 and SiF4. 19 Reaction of S2FM with AgCN or AgOCN.-When S2F4o was heated with either AgCN or AgOCN for 17-24 hr. at 150-200°, Reaction of S2F40 with A12C16.-Disulfur decafluoride (0.1250 g., 0.4919 mmole) was heated with A12C16 (~0.2 g.) for 17 hr.…”

Section: Methodsmentioning

confidence: 99%

Chemical Properties of Disulfur Decafluoride

Cohen¹,

MacDiarmid²

1965

Inorg. Chem.

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Section: Methodsmentioning

confidence: 99%

Chemical Properties of Disulfur Decafluoride

Cohen¹,

MacDiarmid²

1965

Inorg. Chem.

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“…This beam crosses an argon-seeded diacetylene beam (at seeding fractions of 5%) in the main chamber at a collision energy of 40.1 kJ⅐mol Ϫ1 (vp ϭ 599 Ϯ 20 m⅐s Ϫ1 , S ϭ 21.0 Ϯ 1.0). Diacetylene (Ͼ 99.5% purity) was synthesized according to literature (32), and purified by trap-to-trap distillation. The reactively scattered species were monitored using a triply differentially pumped detector consisting of a Brinktype electron-impact-ionizer, quadrupole mass-filter, and a Daly ion detector by recording TOF spectra at different laboratory angles at mass to charge ratios.…”

Section: Methodsmentioning

confidence: 99%

Chemical dynamics of triacetylene formation and implications to the synthesis of polyynes in Titan's atmosphere

Kim

Kaiser

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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For the last four decades, the role of polyynes such as diacetylene (HCCCCH) and triacetylene (HCCCCCCH) in the chemical evolution of the atmosphere of Saturn's moon Titan has been a subject of vigorous research. These polyacetylenes are thought to serve as an UV radiation shield in planetary environments; thus, acting as prebiotic ozone, and are considered as important constituents of the visible haze layers on Titan. However, the underlying chemical processes that initiate the formation and control the growth of polyynes have been the least understood to date. Here, we present a combined experimental, theoretical, and modeling study on the synthesis of the polyyne triacetylene (HCCCCCCH) via the bimolecular gas phase reaction of the ethynyl radical (CCH) with diacetylene (HCCCCH). This elementary reaction is rapid, has no entrance barrier, and yields the triacetylene molecule via indirect scattering dynamics through complex formation in a single collision event. Photochemical models of Titan's atmosphere imply that triacetylene may serve as a building block to synthesize even more complex polyynes such as tetraacetylene (HCCCCCCCCH).electronic structure calculations ͉ planetary chemistry ͉ crossed molecular beams ͉ photochemical model

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“…Such values are not outrageously different from the bond length of 1.55 Å and symmetric stretch frequency of 800 cm –1 reported for the Si–F bonds found in SiF 4 . 54 , 55 The spin characteristics of the system continue to fluctuate occasionally, but tend increasingly toward a fully compensated configuration, consistent with saturation of both the dangling bonds belonging to a single dimer.…”

Section: Adsorption On the Clean Surfacementioning

confidence: 68%

First-Principles Dynamics of Fluorine Adsorption on Clean and Monohydrogenated Si{001}

Jenkins

2022

Langmuir

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The interaction of highly reactive species with solid surfaces can result in modes of adsorption quite distinct from the classic molecular and dissociative events that are usually thought to dominate. For instance, compelling experimental evidence suggests that adsorption of F 2 at the Si{001} surface is often initiated by abstraction (and binding at the surface) of just one fluorine atom from the molecule; the second fluorine atom subsequently experiences either a separate atomic adsorption event or ejection from the surface altogether. Molecular dynamics simulations using empirical potentials support this concept but massively overestimate the prevalence of atomic ejection. In this work, we report first-principles molecular dynamics calculations that correctly show atomic ejection to be rare while providing insight into the details of abstractive adsorption. In addition, we also examine the case of F 2 adsorption onto a monohydrogenated Si{001} surface, finding evidence for a different type of abstractive adsorption, in which a hydrogen atom may be removed from the surface to form a short-lived HFF intermediate. The latter rapidly decomposes to produce either HF or (via reaction with another surface hydrogen atom) H 2 .

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The Infrared and Raman Spectra of SiF4

Cited by 88 publications

References 6 publications

Chemical Properties of Disulfur Decafluoride

Chemical Properties of Disulfur Decafluoride

Chemical dynamics of triacetylene formation and implications to the synthesis of polyynes in Titan's atmosphere

First-Principles Dynamics of Fluorine Adsorption on Clean and Monohydrogenated Si{001}

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