Bond strengths of ethylene and acetylene

• Published in: Journal of the American Chemical Society Vol. 112; no. 15; pp. 5750 - 5759
• Main Authors: Ervin, Kent M, Gronert, Scott, Barlow, S. E, Gilles, Mary K, Harrison, Alex G, Bierbaum, Veronica M, DePuy, Charles H, Lineberger, W. C, Ellison, G. Barney
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 01.07.1990
• Subjects: ACETYLENE; ALKENES; ALKYNES; Atomic and molecular physics; CHEMICAL BONDS; DATA; DATA ANALYSIS; DISSOCIATION ENERGY; ELECTRON SPECTROSCOPY; ENERGY; ETHYLENE; Exact sciences and technology; EXPERIMENTAL DATA; HYDROCARBONS; INFORMATION; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; KINETICS; MEASURING INSTRUMENTS; MEASURING METHODS; Molecular properties and interactions with photons; NUMERICAL DATA; ORGANIC COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; Physics; SPECTROSCOPY 400201 > Chemical & Physicochemical Properties; Molecules; Chemical bond; Photoelectron spectrum; Experimental study; Thermodynamic properties; Molecular dissociation; Organic compounds

Negative ion photoelectron spectroscopy and gas-phase proton transfer kinetics were employed to determine the CH bond dissociation energies of acetylene, ethylene, and vinyl radical: D{sub 0}(HCC-H) = 131.3 {plus minus} 0.7 kcal mol{sup {minus}1}, D{sub 0}(CH{sub 2}CH-H) = 109.7 {plus minus} 0.8 kca...