Fragmentation of the Excited Parent Ions, [CH3Kr82]+ and [CH3O18]—, Following the β— Decay of CH3Br82 and the β+ Decay of CH3F18

Review: gas-phase ion chemistry of the noble gases: recent advances and future perspectives

This review article surveys recent experimental and theoretical advances in the gas-phase ion chemistry of the noble gases. Covered issues include the interaction of the noble gases with metal and non-metal cations, the conceivable existence of covalent noble-gas anions, the occurrence of ion-molecule reactions involving singly-charged xenon cations, and the occurrence of bond-forming reactions involving doubly-charged cations. Research themes are also highlighted, that are expected to attract further interest in the future.

Xenon as a Nucleophile in Gas-Phase Displacement Reactions: Formation of the Methyl Xenonium Ion

Xenon undergoes reaction with protonated methyl fluoride in the gas phase to form abundant quantities of the stable methyl xenonium ion, CH(3)Xe(+). Estimated values for the xenon-carbon and krypton-carbon bond strengths in the rare gas-methyl molecular ions are 43 +/- 8 and 21 +/- 15 kilocalories per mole, respectively.