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Kinetics of the competitive chlorinations of some perfluoroalkyl iodides determination of the bond dissociation energies D(CD3-I), D,(C2F5-I), and D,(i,-C3F7-I)

✍ Scribed by Samuel I. Ahonkhai; Eric Whittle

Publisher: John Wiley and Sons
Year: 1984
Tongue: English
Weight: 635 KB
Volume: 16
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550160505

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✦ Synopsis

The reactions C1 + RI+ICl + R (R = CF,, CzF5, and i-C,F,) have been studied competitively in the gas phase over the range of 27-231°C. The following Arrhenius parameters were obtained:

log A(cm3/mol . s) 13.99 f 0.21 13.97 -+ 0.20 14.18 f 0.20 E(kJ/mol) 17.1 2 2.0 11.5 f 2.0 10.2 2 2.0 The above data lead to bond dissociation energies D(R-I) which are compared with previous published results. The following values are recommended D(CF,-I) = 224, D(C,F,-I) = 219, and D(Z-C3F7-I) = 215 kJ/mol.

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