1. X-Ray Crystallography: A History of Ideas.- 2. Microwave Spectroscopy.- 3. Infrared Spectroscopy.- 4. Gas-Phase Electron Diffraction.- 5. A Spectroscopist's View on the Structural Problem.- 6. Aspects of Structural Chemistry in Molecular Biology.- 7. Magic and Mysteries of Modern Molecular Dynamics Simulations. A Basic Introduction.- 8. Phases, Phase Changes, and the Thermodynamics of Small Systems.- 9. Relativistic Effects in Molecular Structure of s- and p-Block Elements.- 10. Metal Halide Molecular Structures.- 11. Strength from Weakness: Inorganic Structures.- 12. The Myth about Planarity of Olefinic Carbon Atoms: An ab Initio Study.- 13. Polymorphism.- 14. Hydrogen Bond at the Dawn of the XXI Century. New Methods, New Results, New Ideas.- 15. Improper, Blue-Shifting Hydrogen Bond: Theory and Experiment.- 16. From Molecules to Supermolecules: A Theoretical Approach.- 17. Strength from Motion in Crystals: The Example of Supramolecular Adducts.- 18. Crystal Engineering from Weakness to Strength - An Overview.- 19. Controlling Molecular Synthesis in the Solid State Using Linear Templates.- 20. Ab Initio Molecular Dynamical Simulation on H2 Adsorption and Storage in Carbon-Based Materials.- 21. First-Principles Studies on Heterogeneous Catalysis of Amination: Mechanisms and Support Effects.