Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability

Detalhes bibliográficos
Autor(a) principal: Silva, Daniela Rodrigues
Data de Publicação: 2021
Tipo de documento: Tese
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/48745
Resumo: This thesis consists of a collection of density functional theory investigations on conformational effects and bonding mechanism in halogenated model systems. First, thorough analyses of the physical forces underlying the gauche effect and the rotational barriers of 1,2-disubstituted ethanes have been performed. Then, the trends in bond strength of archetypal donor–acceptor Lewis pairs have been systematically evaluated. The main purpose is to obtain physically meaningful rationales to explain the studied chemical phenomena. The detailed analyses presented herein shed light on often overlooked quantum chemical effects behind the observed conformational preferences and bonding strengths. It is expected that the fundamental insights provided in this thesis will be a step towards a more comprehensive understanding of the effect of halogen atoms on the structure and bonding of organic and inorganic compounds, which could be extended to rationalize, predict, and tune the properties of more complex molecular systems.
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spelling Conformation and bonding: theoretical studies on conformational effects and Lewis pair stabilityConformação e ligação: estudos teóricos sobre efeitos conformacionais e estabilidade de pares de LewisTeoria de ligaçãoAnálise conformacionalTeoria do funcional de densidadeHalogêniosPares de LewisBond theoryConformational analysisDensity functional theoryHalogensLewis pairsQuímicaThis thesis consists of a collection of density functional theory investigations on conformational effects and bonding mechanism in halogenated model systems. First, thorough analyses of the physical forces underlying the gauche effect and the rotational barriers of 1,2-disubstituted ethanes have been performed. Then, the trends in bond strength of archetypal donor–acceptor Lewis pairs have been systematically evaluated. The main purpose is to obtain physically meaningful rationales to explain the studied chemical phenomena. The detailed analyses presented herein shed light on often overlooked quantum chemical effects behind the observed conformational preferences and bonding strengths. It is expected that the fundamental insights provided in this thesis will be a step towards a more comprehensive understanding of the effect of halogen atoms on the structure and bonding of organic and inorganic compounds, which could be extended to rationalize, predict, and tune the properties of more complex molecular systems.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Esta tese consiste em uma coleção de estudos usando a teoria do funcional de densidade em efeitos conformacionais e mecanismo de ligação de sistemas modelo halogenados. Em primeiro lugar, análises detalhadas das forças físicas subjacentes ao efeito gauche e a barreira rotacional de etanos 1,2-dissubstituídos são realizadas. Em seguida, as tendências de força de ligação de pares doadores–aceptores de Lewis arquetípicos são sistematicamente avaliadas. O principal objetivo é obter fundamentação física relevante para explicar os fenômenos químicos estudados. As análises detalhadas apresentadas apontam efeitos quânticos frequentemente negligenciados por trás das preferências conformacionais e forças de ligação observadas. Espera-se que os conhecimentos fundamentais obtidos nesta tese constituam um passo importante para o melhor entendimento do efeito de átomos de halogênio na estrutura e ligação de compostos orgânicos e inorgânicos, o qual poderia ser estendido para racionalizar, predizer e aperfeiçoar as propriedades de sistemas moleculares mais complexos.Universidade Federal de LavrasPrograma de Pós-Graduação em AgroquímicaUFLAbrasilDepartamento de QuímicaFreitas, Matheus Puggina deGuerra, Célia FonsecaHamlin, Trevor A.Grossmann, Tom N.Geerke, Daan P.Poater, JordiSzatylowicz, HalinaRamalho, Teodorico de CastroSilva, Daniela Rodrigues2021-12-29T16:37:51Z2021-12-29T16:37:51Z2021-12-292021-11-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfSILVA, D. R. Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability. 2021. 139 p. Tese (Doutorado em Agroquímica) – Universidade Federal de Lavras, Lavras, 2021.http://repositorio.ufla.br/jspui/handle/1/48745enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2021-12-29T16:37:51Zoai:localhost:1/48745Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2021-12-29T16:37:51Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability
Conformação e ligação: estudos teóricos sobre efeitos conformacionais e estabilidade de pares de Lewis
title Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability
spellingShingle Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability
Silva, Daniela Rodrigues
Teoria de ligação
Análise conformacional
Teoria do funcional de densidade
Halogênios
Pares de Lewis
Bond theory
Conformational analysis
Density functional theory
Halogens
Lewis pairs
Química
title_short Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability
title_full Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability
title_fullStr Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability
title_full_unstemmed Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability
title_sort Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability
author Silva, Daniela Rodrigues
author_facet Silva, Daniela Rodrigues
author_role author
dc.contributor.none.fl_str_mv Freitas, Matheus Puggina de
Guerra, Célia Fonseca
Hamlin, Trevor A.
Grossmann, Tom N.
Geerke, Daan P.
Poater, Jordi
Szatylowicz, Halina
Ramalho, Teodorico de Castro
dc.contributor.author.fl_str_mv Silva, Daniela Rodrigues
dc.subject.por.fl_str_mv Teoria de ligação
Análise conformacional
Teoria do funcional de densidade
Halogênios
Pares de Lewis
Bond theory
Conformational analysis
Density functional theory
Halogens
Lewis pairs
Química
topic Teoria de ligação
Análise conformacional
Teoria do funcional de densidade
Halogênios
Pares de Lewis
Bond theory
Conformational analysis
Density functional theory
Halogens
Lewis pairs
Química
description This thesis consists of a collection of density functional theory investigations on conformational effects and bonding mechanism in halogenated model systems. First, thorough analyses of the physical forces underlying the gauche effect and the rotational barriers of 1,2-disubstituted ethanes have been performed. Then, the trends in bond strength of archetypal donor–acceptor Lewis pairs have been systematically evaluated. The main purpose is to obtain physically meaningful rationales to explain the studied chemical phenomena. The detailed analyses presented herein shed light on often overlooked quantum chemical effects behind the observed conformational preferences and bonding strengths. It is expected that the fundamental insights provided in this thesis will be a step towards a more comprehensive understanding of the effect of halogen atoms on the structure and bonding of organic and inorganic compounds, which could be extended to rationalize, predict, and tune the properties of more complex molecular systems.
publishDate 2021
dc.date.none.fl_str_mv 2021-12-29T16:37:51Z
2021-12-29T16:37:51Z
2021-12-29
2021-11-22
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv SILVA, D. R. Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability. 2021. 139 p. Tese (Doutorado em Agroquímica) – Universidade Federal de Lavras, Lavras, 2021.
http://repositorio.ufla.br/jspui/handle/1/48745
identifier_str_mv SILVA, D. R. Conformation and bonding: theoretical studies on conformational effects and Lewis pair stability. 2021. 139 p. Tese (Doutorado em Agroquímica) – Universidade Federal de Lavras, Lavras, 2021.
url http://repositorio.ufla.br/jspui/handle/1/48745
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Lavras
Programa de Pós-Graduação em Agroquímica
UFLA
brasil
Departamento de Química
publisher.none.fl_str_mv Universidade Federal de Lavras
Programa de Pós-Graduação em Agroquímica
UFLA
brasil
Departamento de Química
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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