Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/48541
metadata.artigo.dc.title: Nature and Strength of Lewis Acid/Base Interaction in Boron and Nitrogen Trihalides
metadata.artigo.dc.creator: Silva, Daniela Rodrigues
Santos, Lucas de Azevedo
Freitas, Matheus P.
Guerra, Célia Fonseca
Hamlin, Trevor A.
metadata.artigo.dc.subject: Activation strain analysis
Bond energy
Density functional calculations
Energy decomposition analysis
Lewis acid-base pairs
Ativação de cepas - Análise
Energia de ligação
Teoria do Funcional da Densidade
Teoria ácido-base de Lewis
metadata.artigo.dc.publisher: Wiley-VCH GmbH
metadata.artigo.dc.date.issued: Oct-2020
metadata.artigo.dc.identifier.citation: SILVA, D. R. et al. Nature and Strength of Lewis Acid/Base Interaction in Boron and Nitrogen Trihalides. Chemistry - An Asian Journal, [S. I.], v. 15, n. 23, p. 4043-4054, Dec. 2020. DOI: https://doi.org/10.1002/asia.202001127.
metadata.artigo.dc.description.abstract: We have quantum chemically investigated the bonding between archetypical Lewis acids and bases. Our state-of-the-art computations on the X3B−NY3 Lewis pairs have revealed the origin behind the systematic increase in B−N bond strength as X and Y are varied from F to Cl, Br, I, H. For H3B−NY3, the bonding trend is driven by the commonly accepted mechanism of donor−acceptor [HOMO(base)−LUMO(acid)] interaction. Interestingly, for X3B−NH3, the bonding mechanism is determined by the energy required to deform the BX3 to the pyramidal geometry it adopts in the adduct. Thus, Lewis acids that can more easily pyramidalize form stronger bonds with Lewis bases. The decrease in the strain energy of pyramidalization on going from BF3 to BI3 is directly caused by the weakening of the B−X bond strength, which stems primarily from the bonding in the plane of the molecule (σ-like) and not in the π system, at variance with the currently accepted mechanism.
metadata.artigo.dc.identifier.uri: http://repositorio.ufla.br/jspui/handle/1/48541
metadata.artigo.dc.language: en
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