Ionic Processes in the Gas Phase

The field of gas phase ion chemistry has undergone spectac ular growth and development in the last decade. Ne\·! experimental techniques have developed and theoretical advancements in quantum chemistry and chemical dynamics have begun to provide quantitative information, deeper insights and important guideposts for experi ments. The growing interaction between theoreticians and experi mentalists is yielding scientific information of both basic and applied significance. The NATO Advanced Study Institute on Chemistry of Ions in the Gas Phase held at VimeirCl, Portugal, from 6 to 17 September 1982 took place four years after the 1978 Advanced Study Insti tute on Kinetics of Ion-Molecule Reactions held at la Baule, France. New theoretical approaches and experimental techniques developed since then are included in this book. Fundamental aspects concerning the kinetics and dynamics of formation and decomposition of gaseous positive and negative ions, their structural charActerisation, energetics and thermochemistry are also discussed. In addition, some recent innovative developments in the areas of photodissociation, multiphoton ionisation, photo electron-photoion coincidence spectroscopy, selected ion flow tube technique, and other techniques will be fonnd. The success of the NATO Advanced Institute on Chemistry of Ions in the Gas Phase was mostly due to the high quality of the lectures, panel sessions, research review contributions and the ensuing important discussions which would informally continue after the scheduled sessions. All the participants were ulti mately responsible for the attainment of the aims of the Institute Front Matter....Pages i-x Potential Energy Surfaces and Theory of Unimolecular Dissociation....Pages 1-6 Scanning Methods for Double-Focussing Mass Spectrometers....Pages 7-21 Charge Exchange Mass Spectrometry....Pages 23-40 Isotope Exchange in Ion-Molecule Reactions....Pages 41-66 Energetics and Dynamics of Ion-Molecule Reactions at Thermal Energies....Pages 67-86 Recent Studies of Gas-Phase Reactions of Anions with Organic Molecules....Pages 87-110 Gas-Phase Studies of the Influence of Solvation on Ion Reactivity....Pages 111-134 Exothermic Bimolecular Ion Molecule Reactions with Negative Temperature Dependence....Pages 135-157 Spectroscopic Structure and Radiationless Decay of Open-Shell Organic Cations....Pages 159-178 Gas-Phase Ion Photodissociation....Pages 179-203 Dissociation Dynamics of Energy Selected Ions Studied by One and Multiphoton Ionization....Pages 205-225 Sift-Drift Studies of Anions....Pages 227-241 Determinations of Gas-Phase Organic Ion Structures....Pages 243-265 Carbon Skeletal Rearrangements Via Pyramidal Carbocations....Pages 267-286 Low Rate Fragmentation Reactions of Gaseous Ions....Pages 287-302 Applications of the Franck-Condon Factors to Polyatomic Molecules....Pages 303-325 Ion Clusters: Summary of the Panel Discussion....Pages 327-354 Ion Thermochemistry: Summary of the Panel Discussion....Pages 355-360 Instrumentation: Summary of the Panel Discussion....Pages 361-366 Back Matter....Pages 367-374 Proceedings of the NATO Advanced Study Institute on Chemistry of Ions in the Gas Phase, Vimeiro, Portugal, September 16-17, 1982