Reactivities of cis- and trans-buten-2-yl free radicals in presence of D2S. I. Relative values of rate constants

✍ Scribed by C. Richard; R. Martin

• Publisher: John Wiley and Sons
• Year: 1985
• Tongue: English
• Weight: 248 KB
• Volume: 17
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550170404

✦ Synopsis

Cisand trans-buten-2-yl free radicals are shown to react with D2S in metathetical steps:

Relative formation rates of monodeuteriated butenes in D2S -2 -C,Hs mixtures were measured at low extent of reaction in the experimental range: 20-200 torr 2 -C4Hs, 0-41-torr D2S and 717-817 K. In these pressure and temperature ranges, the fractional rate constant values k , / k , . / k , / k , remain practically constant and equal to: 0.36/0.17/0.32/0.15. It is concluded from these data that cis-buten-2-yl free radicals are a little more reactive than their trans-isomers and that the mesomeric form CH,CH: CHCH2. is about twice as reactive as CH,CHCH: CH2.