An Investigation of the Gas-Phase Reaction of Atomic Bromine with Disilane: Implications for the Si2H5-H Bond Strength

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Article on an investigation of the gas-phase reaction of atomic bromine with disilane and implications for the Si2H5-H bond strength.

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14 p.

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Goumri, Abdellatif; Yuan, W. J.; Ding, Luying & Marshall, Paul 1993.

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Article on an investigation of the gas-phase reaction of atomic bromine with disilane and implications for the Si2H5-H bond strength.

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14 p.

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Abstract: The rate constant for the reaction Br(4p)2Pj + Si2H6 has been measured with the flash-photolysis/resonance fluorescence technique to be (1.35 ± 0.12) x 10(-10) exp(-3.05 ± 0.3 kJ mol(-1/RT) cm3 s(-1) over the temperature range 295-565 K. The uncertainties represent ± 1σ in the Arrhenius parameters, while 95% accuracy limits are about ± 12%. The results are combined with an assumed activation energy for the reaction Si2H5 + HBr → Si2H6 + Br to yield an estimated Si-H bond dissociation enthalpy of 372 ± 5 kJ mol(-1) at 298 K, which is in accord with most previous experimental and ab initio estimates, and thence ∆H(f,298) (Si2H5) = 234 ± 5 kJ mol(-1).

This is the accepted manuscript version of the article. Reprinted with permission from Elsevier Science Ltd., all rights reserved. The final definitive version is available here: http://www.sciencedirect.com/science/article/pii/000926149390012P

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  • Chemical Physics Letters, 1993, Amsterdam: Elsevier Science Ltd., pp. 296-300

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  • Publication Title: Chemical Physics Letters
  • Volume: 204
  • Issue: 3-4
  • Page Start: 296
  • Page End: 300
  • Peer Reviewed: Yes

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  • 1993

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  • Oct. 2, 2015, 9:40 a.m.

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Goumri, Abdellatif; Yuan, W. J.; Ding, Luying & Marshall, Paul. An Investigation of the Gas-Phase Reaction of Atomic Bromine with Disilane: Implications for the Si2H5-H Bond Strength, article, 1993; [Amsterdam, Netherlands]. (digital.library.unt.edu/ark:/67531/metadc725797/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.