Molecules and Their Spectroscopic Properties presents a comprehensive collection of geometrical and spectroscopic constants and collisional characteristics for molecules most important in applications, with data on: energy levels, fundamental vibrational frequencies, electron and proton affinities, dipole moments and polarizabilities, ionization potentials and effective cross sections for various elementary processes occurring in laboratory and astrophysical plasmas, chemical processes, and molecular lasers. Besides the tabulated and graphical material, the most important physical notations and fundamental relationships are included, too. The up-to-date reference data presented will be useful for specialists working in molecular spectroscopy, physics of molecular collisions, and laser physics.

1 Molecular Structure.- 1.1 Classification of Chemical Bonds and Molecular Terms.- 1.2 Coupling Schemes.- 1.3 Quantum Chemistry Methods.- 1.4 Equilibrium Form of Molecules.- 1.5 Potential-Energy Curves.- 1.6 Corrections to the Electronic Structure.- 2 Spectroscopic and Geometrical Constants of Molecules.- 2.1 Constants of Diatomic Molecules.- 2.2 Fundamental Vibrational Frequencies of Polyatomic Molecules..- 2.3 Rotational Constants and Geometrical Parameters of Polyatomic Molecules.- 3 Energy Constants of Molecules.- 3.1 Bond Dissociation Energies.- 3.2 Ionization Potentials.- 3.3 Electron Affinities.- 3.4 Proton Affinities.- 4 Electrical Properties of Molecules.- 4.1 Dipole Moments.- 4.2 Multipole Moments.- 4.3 Molecular Polarizabilities.- 5 Molecular Spectra.- 5.1 Types of Transitions and Selection Rules.- 5.2 Oscillator Strengths and Transition Probabilities.- 5.3 Photoionization.- 6 Collisions of Molecules with Electrons.- 6.1 Basic Approaches.- 6.2 Types of Collision Processes.- 6.3 Elastic Scattering.- 6.4 Excitation of Molecules by Electron Impact.- 6.5 Dissociation and Dissociative Attachment.- 6.6 Ionization by Electron Impact.- 6.7 Electron-Ion Recombination and Electron Attachment.- 7 Interatomic Potentials.- 7.1 Interaction Constants.- 7.2 Energy Potentials of Molecular Hydrogen and Its Ions.- References.