title: Hydrogen bonds between zwitterions: intermediate between classical and charge-assisted ones. A case study.
abstract: Detailed investigation of the electron density distribution function of N-succinopyridine in the crystal and in isolated state within Bader's Atoms in Molecules theory has been carried out to analyze the charge density and energetical aspects of zwitterionic H-bonding. By means of comparative analysis of H-bonds formed between molecular, zwitterionic, and likely charged species, it was shown that, according to the criteria of H-bonding, all these interactions do not differ from each other.
authors.affiliation: A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Vavilov Str., 28, Moscow, Russia.
authors.forename: Yulia V
authors.initials: YV
authors.lastname: Nelyubina
authors.forename: Mikhail Yu
authors.initials: MY
authors.lastname: Antipin
authors.forename: Konstantin A
authors.initials: KA
authors.lastname: Lyssenko