1 Introduction.- 2 Mechanical Properties of Molecules, Their Size and Mass.- 3 Molecules in Electric and Magnetic Fields.- 4 Introduction to the Theory of Chemical Bonding.- 5 Symmetries and Symmetry Operations: A First Overview.- 6 Symmetries and Symmetry Operations. A Systematic Approach.- 7 The Multi-Electron Problem in Molecular Physics and Quantum Chemistry.- 8 Overview of Molecular Spectroscopy Techniques.- 9 Rotational Spectroscopy.- 10 Vibrational Spectroscopy.- 11 The Quantum-Mechanical Treatment of Rotational and Vibrational Spectra.- 12 Raman Spectra.- 13 Electronic States.- 14 The Electronic Spectra of Molecules.- 15 Further Remarks on the Techniques of Molecular Spectroscopy.- 16 The Interaction of Molecules with Light: Quantum-Mechanical Treatment.- 17 Theoretical Treatment of the Raman Effect and the Elements of Nonlinear Optics.- 18 Nuclear Magnetic Resonance.- 19 Electron Spin Resonance.- 20 Macromolecules, Biomolecules, and Supermolecules.- 21 Experiments on and with Single Molecules.- 22 Molecular Electronics and Other Applications.- A. 1 The Calculation of Expectation Values Using Wavefunctions Represented by Determinants.- A.l.l Calculation of Determinants.- A.1.2 Calculation of Expectation Values.- A.2 Calculation of the Density of Radiation.- Fundamental Constants of Atomic Physics (Inside Front Cover).- Energy Conversion Table (Inside Back Cover).

This textbook introduces the molecular and quantum chemistry needed to understand the physical properties of molecules and their chemical bonds. It follows the authors' earlier textbook "The Physics of Atoms and Quanta" and presents both experimental and theoretical fundamentals for students in physics and physical and theoretical chemistry. The new edition treats new developments in areas such as high-resolution two-photon spectroscopy, ultrashort pulse spectroscopy, photoelectron spectroscopy, optical investigation of single molecules in condensed phase, electroluminescence, and light-emitting diodes.