Reactivity of Ambident Anions in the Gas Phase

摘要

Ambident anions are negative ions in which several reactive centra are coupledvia resonance. When these ions react, there is a competition possible between the reaction channels via each of these reactive centra. A systematic study on the reactivity of several ambident anions in a Fourier transform ion cyclotron resonance mass spectrometer is described in the thesis. Via probe reactions it is shown that a gas-phase ion/molecule reaction between an ambident anion and an unsaturated polyfluorocarbon compound enables a distinction between the competing reaction channels mentioned. The obtained product distributions can be interpreted using simple perturbation theory. In chapter 1 of the thesis several models and concepts (such as Hard and Soft Acids and Bases, HSAB, perturbation theory and the Allopolarisierungs-Prinzip) are described which have been used previously to explain the reactivity of ambident ions in solution.