Infrared Fingerprints of nN → σ*NH Hyperconjugation in Hydrazides

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorAndrade, Laize A. F.-
Autor(es): dc.creatorSilla, Josué M.-
Autor(es): dc.creatorCormanich, Rodrigo A.-
Autor(es): dc.creatorFreitas, Matheus P.-
Data de aceite: dc.date.accessioned2026-02-09T12:25:20Z-
Data de disponibilização: dc.date.available2026-02-09T12:25:20Z-
Data de envio: dc.date.issued2019-02-15-
Data de envio: dc.date.issued2019-02-15-
Data de envio: dc.date.issued2017-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/32814-
Fonte completa do material: dc.identifierhttps://pubs.acs.org/doi/abs/10.1021/acs.joc.7b01985-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1160983-
Descrição: dc.descriptionAn earlier study demonstrated that hyperconjugation operates in hydrazides by analyzing the N–H stretching mode in gas phase infrared (IR) spectroscopy, and then observing two very distinct bands corresponding to isolated isomers experiencing or not the nN → σ*N–H electron delocalization. The present work reports a chemical method to obtain insight on the hyperconjugation in hydrazide derivatives from solution IR spectroscopy. The analogous amides did not show a νN–H red-shifted band, as the electron donor orbital in the above hyperconjugative interaction does not exist. In addition, the effect of electron withdrawing groups bonded to a nitrogen atom, namely the trifluoroacetyl and the methanesulfonyl groups, was analyzed on the conformational isomerism and on the ability to induce a stronger hyperconjugation in the resulting compounds.-
Idioma: dc.languageen-
Publicador: dc.publisherACS Publications-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceAmerican Chemical Society-
Palavras-chave: dc.subjectHyperconjugation-
Palavras-chave: dc.subjectInfrared spectroscopy-
Palavras-chave: dc.subjectInfrared fingerprints-
Palavras-chave: dc.subjectHiperconjugação-
Palavras-chave: dc.subjectEspectroscopia de infravermelho-
Palavras-chave: dc.subjectImpressões digitais infravermelhas-
Título: dc.titleInfrared Fingerprints of nN → σ*NH Hyperconjugation in Hydrazides-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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