Gas-Phase Ion-Molecule Reactions in Selected Cyclohexanes (PREPRINT)
Abstract
Ion-molecule reactions of cyclohexane, methylcyclohexane and ethylcyclohexane with hydrocarbon cations derived from these cyclohexanes, respectively, have been studied. These ion-molecule reactions take place via various channels including charge transfer, H- transfer, H2- transfer, H3- transfer, hydrocarbon anion transfer, and association with concerted fragmentation. Among these channels, H- transfer is the most prevalent, and for many of the reacting ions, it is the exclusive channel. Most of the reactions proceed in a direct mode, except for the reactions of C4H5+ or C4H7+ with cyclohexane, which in certain channels proceed via the formation of a long-lived collision complex. Some general trends in the reaction rates are observed: smaller reactant ions tend to exhibit faster reaction rates, and odd-electron ions react faster than the even-electron ions. For certain reactant ions, there is evidence of the existence of multiple structural isomers that have different reactivities.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2012
- Accession Number
- ADA573488
Entities
People
- C. Q. Jiao
- Steven Adams
Organizations
- Air Force Research Laboratory