In this volume 28 papers are presented. They cover all the fields studied with ion cyclotron resonance today, including reviews on important fields as well as short contributions on special topics. This report is devided into four parts: 1. Detailed studies on simple molecules, 2. Systematic studies of the ion chemistry, 3. Spectrometer development and 4. Theory. The plan to edit a progress report of the complete field was projected at the 2nd International Symposium on Ion Cyclotron Resonance Spectrometry, held at the Akademie der Wissenschaften und der Literatur, Mainz, March, 1981. Most of the contributions were written in late 1981 or in 1982. Hermann Hartmann Akademie der Wissenschaften und der Literatur Mainz Karl-Peter Wanczek Institut fUrphysikalische und theoretische Chemie Universitat, Frankfurt Acknowledgements The editors gratefully acknowledge support of the Symposium by the Stiftung Volkswagenwerk and the Fonds der Chemischen Industrie. The editors want to take the opportunity to thank H. Otten, President, Akademie der Wissenschaften und der Literatur, for the hospitality all the participants of the Symposium enjoyed. IV Delegates attending the 2nd International Symposium on Ion Cyclotron Reso nance Spectrometry, Akademie der Wissenschaften und der Literatur, Mainz (numbers refer to the photograph) 26. D. Parent 1. M. B. Comisarow 2. 27. R. T. McIver, Jr.

Table of Content

Topics in Ion Photodissociation
Ion Structures and Relaxation of Vibrationally Excited Ions as Studied by Photodissociation
Infrared Photochemistry of Gas Phase Ions
Study of Atomic Metal Ions Generated by Laser Ionization
Gas-Phase Atomic Metal Cations. Ligand Binding Energies, Oxidation Chemistry and Catalysis
Transition Metal Ions in the Gas Phase
Elucidation of the Transfer Mechanism in Ion-Molecule Reactions by ICR
Equilibrium Studies of Electron Transfer Reactions
ICR Study of Negative Ions Produced by Electron Impact in Water Vapor
Reactions with Alkoxide Anions
A Fourier Transform Ion Cyclotron Resonance Study of Negative Ion-Molecule Reactions of Phenyl Acetate, Phenyl Trifluoroacetate and Acetanilide
Site of Protonation in Gaseous Five-Membered Ring Systems C4H4X(X=NH,O,S,CH2)
Gas-Phase Radical-Ion Cycloadditions: Experiment and Theory
Ring Ions in the Ion Chemistry of Thiirane, Ethanediol-1,2, Ethanedithiol-1,2 and 2-Mercaptoethanol
Kinetic Energy of Fragment Ions Produced in Charge Transfer Reactions of He+ and Ar++ with CO
A Tandem ICR Study of the Reaction of N2+ with SO2
Internal Energy Dependence of the Reaction of NH3+ with H2O; A Tandem ICR Study
Precision Determination of Cyclotron Frequencies of Free Electrons and Ions
Toward a Frequency Scanning Marginal Oscillator
An FTICR Spectrometer - Design Philosophy and Practical Realisation
A Microcomputer-Based Fourier Transform Ion Cyclotron Resonance Mass Spectrometric Detection System
FT ICR Spectrometry with a Superconducting Magnet
Analytical Fourier Transform Mass Spectrometry
Thermochemical Information from Ion-Molecule Rate Constants
Ion-Molecule Association Reactions
Theory for Pulsed and Rapid Scan Ion Cyclotron ResonanceSignals
Signals, Noise, Sensitivity and Resolution in Ion Cyclotron Resonance Spectroscopy
Theoretical Tools for the Description of Ion Motion in ICR Spectrometry.