ChemInform Abstract: A KINETIC DETERMINATION OF THE DISSOCIATION ENERGY OF THE CARBON-OXYGEN BOND IN ANISOLE

1976 ◽  
Vol 7 (12) ◽  
pp. no-no
Author(s):  
S. PAUL ◽  
M. H. BACK
Keyword(s):  
Dissociation Energy ◽  
Kinetic Determination ◽  
Oxygen Bond

A Kinetic Determination of the Dissociation Energy of the C—O Bond in Anisole

1975 ◽  
Vol 53 (22) ◽  
pp. 3330-3338 ◽  
Author(s):  
S. Paul ◽  
M. H. Back
Keyword(s):  
Rate Constant ◽  
Dissociation Energy ◽  
Stabilization Energy ◽  
Phenoxy Radical ◽  
Methyl Radicals ◽  
Kinetic Determination ◽  
First Order

The rate of dissociation of anisole into phenoxy and methyl radicals has been measured using a toluene scavenging technique. The rate was measured by the production of methane over the range of temperature 720−795 K and was shown to be first order in anisole concentration and homogeneous. The rate constant, expressed in the Arrhenius form, was[Formula: see text]The dissociation energy, D298(C6H5O—CH3), therefore equals 57 ± 2 kcal/mol, giving ΔHf(C6H5O) = 5 kcal/mol. The stabilization energy of the phenoxy radical is discussed.

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