C-H bond activation as the initial step in the Co sup + -mediated demethanation of propane: The critical role of angular momentum at the rate-limiting transition state

Journal Article · Wed Jul 04 00:00:00 EDT 1990 · Journal of the American Chemical Society; (USA)

DOI:https://doi.org/10.1021/ja00170a054· OSTI ID:6653245

van Koppen, P A.M.; Brodbelt-Lustig, J; Bowers, M T ^[1]; Dearden, D V; Beauchamp, J L ^[2]; Fisher, E R; Armentrout, P B ^[3]

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1. Univ. of California, Santa Barbara (USA)
2. California Institute of Technology, Pasadena (USA)
3. Univ. of Utah, Salt Lake City (USA)

Exothermic reactions of transition-metal ions with alkanes have in many instances been shown to be facile in the gas phase. Reactions mainly result in the loss of molecular hydrogen and small alkanes to yield metal ion-olefin complexes. A variety of experimental techniques have provided thermochemical, kinetic, dynamic, and mechanistic information for these reactions, with an important focus being the identification of the initial activation step. The question of C-H versus C-C bond activation as the initial step in the formation of C-C bond cleavage products has yet to be resolved. The authors have measured reaction cross sections and kinetic energy release distributions for the exothermic reactions of Co{sup +} with propane, propane-2-d{sub 1}, propane-2,2-d{sub 2}, propane-1,1,1-d{sub 3}, propane-1,1,1,3,3,3-d{sub 6}, and propane-d{sub 8}.

• OSTI ID: 6653245
• Journal Information: Journal of the American Chemical Society; (USA), Vol. 112:14; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COBALT IONS
CHEMICAL REACTIONS
PROPANE
ANGULAR MOMENTUM
CHEMICAL ACTIVATION
CROSS SECTIONS
DATA ANALYSIS
EXPERIMENTAL DATA
KINETIC ENERGY
MEASURING METHODS
ALKANES
CHARGED PARTICLES
DATA
ENERGY
HYDROCARBONS
INFORMATION
IONS
NUMERICAL DATA
ORGANIC COMPOUNDS
400201* - Chemical & Physicochemical Properties