On the Strength of Carbon-Hydrogen and Carbon-Carbon Bonds

Abstract

Electron impact critical potentials are combined with thermochemical data to obtain values for the heats of the dissociation reactions, CH₄=CH₃+H, C₂H₆=C₂H₅+H, C₂H₆=2CH₃, and nC₄H₁₀=2C₂H₅. The values found are: D(CH₃–H)=101 kcal./mole, D(C₂H₅–H)=96 kcal./mole, D(CH₃–CH₃)=82.6 kcal./mole and D (C₂H₅–C₂H₅)=77.6 kcal./mole. These values are compared with estimates based on kinetic and photochemical data.