Absolute rate constants for hydrocarbon autoxidation. 29. Rate constants for abstraction of primary aliphatic hydrogens from 2,2-dimethylbutane by the tert-butylperoxy radical

• Published in: Canadian journal of chemistry Vol. 58; no. 24; pp. 2808 - 2812
• Main Authors: Howard, J. A, Chenier, J. H. B
• Format: Journal Article
• Language: English
• Published: Ottawa, Canada NRC Research Press 15.12.1980
• ISSN: 0008-4042; 1480-3291
• DOI: 10.1139/v80-450

Rate constants for abstraction of primary and secondary hydrogens from 2,2-dimethylbutane by the tert-butylperoxy radical at temperatures from 323 to 353 K have been determined from autoxidations and co-autoxidations in the presence of tert-butyl hydroperoxide. At 333 K the rate constant for abstraction of a secondary hydrogen is ~1.5 × 10 −3  M −1  s −1 and the rate constants for abstraction of a primary hydrogen from the tert-butyl and methyl groups of 2,2-dimethylbutane are ~4 × 10 −5 and ~6 × 10 −5  M −5  s −1 respectively.