Higher Excited States of Polyatomic Molecules

Higher Excited States of Polyatomic Molecules, Volume I focuses on the spectra in the vacuum-ultraviolet region between 50,000 and 100,000 cm-1. This book explores the higher excitations in molecules beyond 50,000 cm-1. Organized into three chapters, this volume starts with an overview of the excited-state properties of a molecule and the excited-state ionization potential. This book then proceeds with a discussion of the original classification of the properties as well as the types of excitations observed in the vacuum-ultraviolet. Other chapters discuss photoelectron spectroscopy, which is an independent, self-sustaining branch of molecular spectroscopy. This text examines as well the distinction between valence shell and Rydberg excitations. The final chapter deals with several topics, including the saturated molecules that are classified as having all valence electrons, the alkene absorption spectra, and the spectroscopic data on boron compounds. Analytical chemists, photochemists, molecular spectroscopists, and researchers will find this book extremely useful.

Table of Contents:
Foreword PrefaceAcknowledgments Contents of Volume IIIntroductionChapter I Theoretical Aspects I.A. Classification of Molecular Transitions and Their Properties I.A-1. Rydberg States in Atoms and Molecules I.A-2. Antiresonances I.A-3. Plasmons and Collective Excitations I.B. Excited-State Calculations I.B-1. Rydberg-State Calculations I.B-2. Valence-Shell-State Calculations I.C. Rydberg Spectra I.C-1. Observation of Trends in Rydberg Spectra I.C-2. Calculation of Rydberg Trends in Molecular Spectra Chapter II Experimental Technique II.A. Photoelectron Spectroscopy II.B. High-Pressure Effects on Ultraviolet Spectra II.C . Vacuum-Ultraviolet Spectra in Condensed Phases II.D. Electron-Impact Spectroscopy II.E. Instrumentation II.E-1. Light Sources II.E-2. Solvents II.E-3. Absorption Cells II.E-4. Frequency Shifters II.E-5. Polarizers II.E-6. Optical Spectrometers Chapter III Saturated Absorbers III.A. The Alkanes III.A-1. Methane and the Methyl Radical III.A-2. Ethane III.A-3. Propane and the Higher Acyclic Alkanes III.A-4. Simple Rings and Polycyclic Alkanes III.A-5. Postscript to the Alkane Spectra III.B. The Alkyl Halides III.B-1. Alkyl Monochlorides, Bromides, and Iodides III.B-2. Di-, Tri-, and Tetrachloro-, Bromo-, and Iodoalkanes III.B-3 . Fluoroalkanes III.C. Boron Compounds III.C-1. Boron Hydrides and Halides III.C-2. Boron-Nitrogen Compounds III.D. Group V Systems III.D-1. Amines III.D-2. Compounds of Phosphorus, Arsenic, and Antimony III.E. Oxo Compounds III.E-1. Water III.E-2. Alcohols III.E-3. Ethers III.F. Compounds of Sulfur, Selenium, and Tellurium III.G. Silanes, Germanes, and Stannanes Appendix Rydberg Term TableReferencesIndex