ISSN:
0538-8066
Keywords:
Chemistry
;
Physical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Hexamethylethane has been decomposed in a flow system in the temperature range of 700-900 K. The mechanism involves carbon-carbon bond cleavage at the most highly substituted position and rapid formation of isobutene from the t-butyl radical. The rate expression is \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c}{k({\rm (tC}_{\rm 4} {\rm H}_{\rm 9})_2 \to 2t{\rm C}_{\rm 4} {\rm H}_{\rm 9}.) = 10^{17.4} {\rm exp(} - 36,000/{\rm T)}} & {{\rm sec}^{ - 1}}\\\end{array} $$\end{document} and is completely consistent with deductions from radical buffer, shock-tube, and direct recombination studies. Of special importance is experimental evidence for large decreases of the A factor with increasing temperature and a high heat of formation for the t-butyl radical, ΔHf(tC4H9·)300 = 52.7 ± 6 kJ.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/kin.550110806
