A CENTURY OF THE HYDROGEN BOND (H-BOND)
This chapter summarizes the history of the H-bond from its first assessment by Huggins, Latimer, Rodebush, and Pauling in the years 1920–36. Attempts to get a complete H-bond theoretical understanding are surveyed from Coulson's VB treatment, first high-level HF-MO calculations, and energy-decomposition methods up to modern ab initio and DFT calculations, including Bader's topological analysis and electron-localization parameters, such as Fermi holes, ELF, and source function. The evolution of experimental techniques is also reviewed: vibrational and NMR spectroscopy in solution and in the solid state, determination of crystal structures and experimental electron densities by X-ray and neutron diffraction, thermodynamic evaluation of H-bond enthalpies in gas phase and non-polar solvents, and introduction of acid-base indicators (PA and pKa). The chapter concludes with a list of all books and of the most important reviews published on the H-bond topic.
Keywords: VB methods, MO methods, energy decomposition, DFT methods, AIM analysis, electron localization, H-bond enthalpies, IR spectroscopy, NMR spectroscopy, X-ray diffraction
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