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Absolute and relative rate constants for the reactions of hydroxyl radicals and chlorine atoms with a series of aliphatic alcohols and ethers at 298 K

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  • Linda Nelson
  • Oliver Rattigan
  • Ruaidhri Neavyn
  • Howard Sidebottom
  • Jack Treacy
  • Nielsen, Ole John

Rate constants for the gas‐phase reactions of hydroxyl radicals and chlorine atoms with aliphatic alcohols and ethers have been determined at 298 ± 2 K and at a total pressure of 1 atmosphere. The OH radical rate data were obtained using both the absolute technique of pulse radiolysis combined with kinetic UV spectroscopy and a conventional photolytic relative rate method. The Cl atom rate constants were measured using only the relative rate method. Values of the rate constants in units of 10−12 cm3 molecule−1 s−1 are: (Formula Presented.) The above relative rate constants are based on the values of 퓀(OH + c‐C6H12) = 7.49 × 10−12 cm3 molecule−1 s−1 and 퓀(Cl + c‐C6H12) = 311 × 10−12 cm3 molecule−1 s−1. Attempts to corre late the trends in the rate constant data in terms of the bond dissociation energies and inductive effects are discussed.

OriginalsprogEngelsk
TidsskriftInternational Journal of Chemical Kinetics
Vol/bind22
Udgave nummer11
Sider (fra-til)1111-1126
Antal sider16
ISSN0538-8066
DOI
StatusUdgivet - 1 jan. 1990

ID: 214272873