Notes
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Outline
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What did DeBoer do at the US Space Force last summer?
  • Gary DeBoer
  • Associate Professor of Chemistry
  • LeTourneau University
  • Longview, TX
  • Oct. 20, 2005
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Model Reactions of Interest Using GaussianW03
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General Experimental Methodology
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Ar/C2H4/SO2 = 120/100/10 sccm, 1.4 torr, 8 cm-1 res.
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General Calculation Methodology
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Ethene Results
  • Agreement with literature
    • Quantitative
    • Qualitative
  • ISC of ketocarbene from triplet to singlet produces a structure that optimizes to the aldehyde


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Propene Results
  • Agreement with literature
    • Less to go on here
  • ISC of ketocarbene from triplet to singlet produces a structure that may lead to the propanal, or possibly to formaldehyde and ethene.


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Conclusions
  • Gaussian can calculate energy pathways
  • The unrestricted DFT B3LYP 6-31+(d,p) seems to compare well with some experimental results for ethene.
  • TS results are the most challenging.
  • If it works for ethene, it may be applicable to propene, butene, etcene.
  • The results are for systems with no rotational or vibrational energies-can’t calculate hot spectra.
  • The work is easily portable and we can continue the alkene work at LeTourneau.



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Future Work?
  • Look more at non isodesmic singlet dissociations
    • Bit more complicated
  • Larger hydrocarbons, butenes
    • Number of reactions increases
    • Calculation time increases with larger molecules
  • US Space Force


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