Electrostatic-covalent H-bond model

The idea of the covalent nature of short H-bonds is analyzed later in this chapter in detail. This is not a new idea, originally claimed by Pauling [20] who stated the covalent nature of the H-bond for the (FHF) ion. The covalency of H-bonds was also discussed early on by Coulson and Danielsson [21] and this topic was analyzed in more recent studies [22]. Gilli et al. [23] introduced the so-called electrostatic-covalent H-bond model (ECHBM) where the following features were summarized ... 

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