Some reactions of the isopropyl radical

✍ Scribed by L. Szirovicza; F. Márta

• Publisher: John Wiley and Sons
• Year: 1976
• Tongue: English
• Weight: 574 KB
• Volume: 8
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550080609

✦ Synopsis

The decomposition of ethane sensitized by isopropgl radicals was studied in the tempera-

The rate of formation of n-butane, isopentane, and 2,S-dimethyl-t,iire range of 496-548°K. butane were nieasrued. The expression kI/PZ1'* was found to be log kl/kg"2(dm3'*/n~ol"2 . see1!*) = (3.2 f 0.4) -(54 f 3 kJ/mol)/2.3RT

where k , and k 2 are rate constants of

The decomposition of propylene sensitized by isopropgl radicals was studied between 494 The :end 580'K by determination of the initial rates of formation of the main products. ratio of k13/k2"2 was evaliiated to be Ii)g kl3/k."!2(diii3'*/mnIl~* . sec1i2) = (1.9 f 0.7) -(32 f 7 kJ/mol)/P.3RT

where k , , is the r:tte constant for

The isoinerizat ion of the isopropyl radical was investigated by st tidying the decomposition The decomposition of the iso-C3H7 radical into C2H, and CHI was followed On the basis of the experiment.al data, obtained Of azoisopropane. I)? measuring the rate of formation of C,H+ irr the range of 538-666' K, k 1 ~/ k 2 ~1 ~ was found: log k I 5 / k 2 l 2 ( m o l ~~~/ d n i 3 * . sec1:2) = (9.3 f 0.8) -(152 f 9 kJ/mol)/2.3RT

where k 1 5 is the rate constant of i I .i)