Front Cover; Advances in Physical Organic Chemistry, Volume 32; Copyright Page; Contents; Preface; Contributors to Volume 32; Chapter 1. Perspectives in Modern Voltammetry: Basic Concepts and Mechanistic Analysis; 1. Introduction; 2. General concepts of voltammetry; 3. Cyclic voltammetry; 4. Hydrodynamic voltammetry; 5. Microelectrodes; 6. Sonovoltammetry; 7. Theoretical modelling; 8. A comparison of voltammetric techniques; 9. Current and future direction of voltammetry; Appendix; References; Chapter 2. Organic Materials for Second-Order Non-Linear Optics; 1. Introduction

2. Basics of non-linear optics3. Quantum-chemical basis for second-order polarizabilities; 4. Non-linear optical susceptibilities and experimental methods to evaluate x(2) and ß; 5. Optimization of second-order polarizabilities: applications to real molecules; 6. Conclusion; Acknowledgements; References; Chapter 3. Tautomerism in the Solid State; 1. Introduction; 2. Proton tautomerism in an isolated system; 3. Proton tautomerism in the solid state; 4. Photochromism and thermochromism derived from proton tautomerism; 5. Photochemical hole-burning

6. Dielectric properties derived from proton tautomerism in crystals7. Concluding remarks; Acknowledgements; References; Chapter 4. The Yukawa-Tsuno Relationship in Carbocationic Systems; 1. Introduction; 2. Applications of the Yukawa-Tsuno equation; 3. Yukawa-Tsuno correlations for benzylic sololyses generating carbocations; 4. Carbocation formation equilibria; 5. Yukawa-Tsuno correlations for electrophilic addition of; 6. Structure-reactivity relationship in polyarylcarbocation systems; 7. Stabilities of carbocations in the gas phase; 8. Theoretically optimized structures of carbocations

9. Reaction mechanisms and transition-state shifts10. Concluding remarks; Acknowledgements; References; Author Index; Cumulative Index of Authors; Cumulative Index of Titles