Isotope effects in the diphenylpicrylhydrazyl-inhibited thermal polymerization of 2,6-dideuteriostyrene
- 1 November 1981
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 59 (21) , 3090-3094
- https://doi.org/10.1139/v81-452
Abstract
There is an inverse isotope effect in the reaction between 2,2-diphenyl-1-picrylhydrazyl DPPH and 2,6-dideuteriostyrene of 0.75 ± 0.07 at 75 °C in degassed neat styrene. This result is consistent with the proposal that the reaction involves hydrogen transfer to DPPH from a Diels–Alder dimer of styrene. The rate constant for dimerization of styrene to this dimer is calculated to be 1.8 × 10−10 L mol−1 s−1 at 75 °C.Keywords
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