The topology of π···H hydrogen bonds |
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Authors: | Boaz G Oliveira and Regiane C M U Araújo |
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Institution: | (1) Instituto de Ci?ncias Ambientais e Desenvolvimento Sustent?vel, Universidade Federal da Bahia, Barreiras, BA, 47801-100, Brazil;(2) Departamento de Qu?mica, Universidade Federal da Para?ba, Jo?o Pessoa, PB, 58036-300, Brazil |
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Abstract: | Abstract Unsaturated hydrocarbons are routinely used as proton acceptors because their π clouds possess a capacity to interact with
Lewis acids and cationic species. Thus, in order to understand the formation of π hydrogen-bonded complexes, which in many
cases are considered as weakly bound systems, the topological quantification of the charge density ruled by quantum mechanic
theorems is very useful. Although elaborated by Richard Bader 40 years ago, the Quantum Theory of Atoms in Molecules (QTAIM)
has only recently become widely known, and it has been applied in several scientific fields, allowing great insights in chemical
bonding studies of intermolecular systems, in particular those formed by π···H hydrogen bonds. |
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