| Autor: |
Darrin J. Bellert, S. Jason Dee, Daniel Ashley, Ivanna E. Laboren, Sarah E. Frey, Otsmar J. Villarroel, Vanessa A. Castleberry |
| Rok vydání: |
2009 |
| Předmět: |
|
| Zdroj: |
The journal of physical chemistry. A. 113(51) |
| ISSN: |
1520-5215 |
| Popis: |
Rate constants for the low-energy Ni(+)-assisted C-C bond cleavage reaction of deuterium-labeled acetone have been acquired under jet-cooled conditions in the gas phase. The energies used to initiate the dissociative reactions of the precursor complex ion Ni(+)(d(6)-Ac) are well below that required to cleave C-C sigma-bonds in isolated organic molecules. The rate constants are compared to those acquired previously for the lighter Ni(+)(h(6)-Ac) isotope and result in a substantial kinetic isotope effect (k(H)/k(D) approximately 5.5). Arguments are made that implicate isomerization leading to C-C bond coupling as the rate-limiting step (not C-C sigma-bond activation) in the dissociative reaction. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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