[内容简介]

Rotational Structure in Molecular Infrared Spectra provides a much-needed guide to the basic theoretical principles and contemporary applications of high-resolution molecular spectroscopy. It centers on the treatment of semirigid symmetric top molecules, with extension made to the other classes of molecules. This book reviews operational quantum mechanical methods, spherical tensor algebra, and group theoretical methods applied to molecular symmetry. Attention is given to phase conventions and their effects on the values of matrix elements, helping to prevent errors and misunderstanding. Advanced aspects of molecular spectroscopy such as complex vibration-rotation interaction mechanisms, dynamics of floppy molecules, and sophisticated theoretical methods are covered.

Key features

• Fills the gap between advanced thematic applications and basic elementary method
• Covers sophisticated mathematical topics in simple, easy-to-read language
• Provides updated formulation of selection rules, with extensive use of tensorial methods
• Offers original educational treatment of vector coupling
• Uses molecular symmetry groups of either geometrical operations or permutation-inversion operations, while also exploiting the effects of the transformations under time reversal
• Appendices separate out several basic theoretical arguments from methods and applications, allowing you quick reference to the topics with which you are most concerned

[目录]

1. The Vibration-Rotation Problem 2. Interaction of Matter and Light 3. Molecular Symmetry and Spectroscopy 4. Symmetry of Wavefunctions in Vibration-Rotation Spectroscopy 5. Nuclear Spin Statistical Weights 6. Expansion and Transformations of the Vibration-Rotation Hamiltonian 7. Effects of Centrifugal Distortions 8. Spectra of Symmetric Top Molecules 9. Spectra of Asymmetric Top Molecules 10. Spectra of Spherical Top Molecules 11. Floppy Molecules Appendix 1: Phases of Wavefunctions Appendix 2: Eigenfunctions of Commuting Operators Appendix 3: Coupling of Angular Momenta Appendix 4: Angular Momentum Matrix Elements Appendix 5: The Full Rotation Group and Irreducible Spherical Tensors Appendix 6: Direction Cosine Operators Appendix 7: Harmonic Oscillators Appendix 8: Vibrational Normal Modes and Coriolis Coefficients Appendix 9: Contact Transformation and Perturbation Methods