Stationary and pulsed photolysis of hexamethyldisilane

Brix, Th.; Bastian, E.; Potzinger, P.

doi:10.1016/1010-6030(89)87127-8

Cited by 23 publications

(24 citation statements)

References 17 publications

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“…In analogy to carbon, photochemistry may potentially serve as an appealing approach for the generation of silyl radicals . For instance, the photolysis of Si−Si bond is feasible but has no practical application in synthesis yet . To the best of our knowledge, there is no recent review on photo generation of silyl radicals with or without the aid of catalysts.…”

Section: Introductionmentioning

confidence: 99%

Recent Developments in the Photo‐Mediated Generation of Silyl Radicals and Their Application in Organic Synthesis

2018

ChemPhotoChem

104

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Section: Introductionmentioning

confidence: 99%

Recent Developments in the Photo‐Mediated Generation of Silyl Radicals and Their Application in Organic Synthesis

2018

ChemPhotoChem

104

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“…Finally, the mass spectrometric analysis of the photolysis products, following the irradiation of triethylsilane with 1000-2000 pulses, showed the formation of C2He and the absence of CH4 or other small silicon species. Experiments were also performed in the presence of Cl2, where the main photolysis products were (CZH5)3SiCl (m/e 121,93) and HC1, with no traces of CH4 or other smaller species.…”

Section: Resultsmentioning

confidence: 99%

CO₂ laser excitation of triethylsilane: Time resolved luminescence of diethylsilyl radical

Papagiannakopoulos¹,

Lazarou²

1994

Int J of Chemical Kinetics

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The infrared multiphoton excitation of triethylsilane in the gas phase, with a pulsed C02 laser at high intensities ( I > 700 MW/cm2), produced an intense luminescence. The spectrum and time profile of this luminescence was studied as a function of pressure, and laser frequency. The radiative lifetime of this emission was 357 t 10 ns, and the quenching rates by Clz and NO were determined from lifetime measurements. A reasonable mechanism for the interpretation of this luminescence involves the initial infrared multiphoton decomposition of triethylsilane, followed by the secondary infrared multiphoton excitation of the primary photofragment diethylsilyl radical, which subsequently undergoes relaxation to an excited electronic state. The addition of 0 2 resulted in a new chemiluminescence at shorter wavelengths, which corresponds to the SiO* chromophore group.

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“…Of the different radical combination reactions only the rate constant for reaction (9) is known [21,22]. The same value has been assumed for the sum of the rate constants /c(8) + /c (25).…”

Section: Computer Simulationsmentioning

confidence: 99%

The Mercury-Sensitized Photolysis of Pentamethyldisilane

Kerst¹,

Potzinger²,

Wagner³

1996

Zeitschrift Für Naturforschung A

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Two primary processes were observed in the Hg-sensitized photolysis of Me 5 Si 2 H: (I) hydrogen abstraction from the Si-H bond with a quantum yield of 0(1) = 0.85, (V) Si-Si bond breaking with 0(V) = 0.04. The hydrogen atoms formed in (/) undergo an H atom abstraction reaction (k(3)), as well as substitution reactions at the Si centers resulting in the formation of dimethylsilane and trimethylsilyl radical (k(4)) or trimethylsilane and dimethylsilyl radical (k(5)). The following branching ratios have been determined:The ratio of disproportionation (A: (2)) to combination (£(1)) for the pentamethyldisilyl radical has been determined with MeOH as the scavenger for 1-methyl-l-trimethylsilylsilene, 0.046 < k(2)/ A: C1) < 0.071. A mechanism with pertinent rate constants has been proposed which accounts for the results.

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Stationary and pulsed photolysis of hexamethyldisilane

Cited by 23 publications

References 17 publications

Recent Developments in the Photo‐Mediated Generation of Silyl Radicals and Their Application in Organic Synthesis

Recent Developments in the Photo‐Mediated Generation of Silyl Radicals and Their Application in Organic Synthesis

CO₂ laser excitation of triethylsilane: Time resolved luminescence of diethylsilyl radical

The Mercury-Sensitized Photolysis of Pentamethyldisilane

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Stationary and pulsed photolysis of hexamethyldisilane

Cited by 23 publications

References 17 publications

Recent Developments in the Photo‐Mediated Generation of Silyl Radicals and Their Application in Organic Synthesis

Recent Developments in the Photo‐Mediated Generation of Silyl Radicals and Their Application in Organic Synthesis

CO2 laser excitation of triethylsilane: Time resolved luminescence of diethylsilyl radical

The Mercury-Sensitized Photolysis of Pentamethyldisilane

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CO₂ laser excitation of triethylsilane: Time resolved luminescence of diethylsilyl radical