Detalhes bibliográficos
Ano de defesa: |
2013 |
Autor(a) principal: |
Sousa, Natanael de Sousa
![lattes](/bdtd/themes/bdtd/images/lattes.gif?_=1676566308) |
Orientador(a): |
LIMA, Roberto Batista de
![lattes](/bdtd/themes/bdtd/images/lattes.gif?_=1676566308) |
Banca de defesa: |
Não Informado pela instituição |
Tipo de documento: |
Dissertação
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Tipo de acesso: |
Acesso aberto |
Idioma: |
por |
Instituição de defesa: |
Universidade Federal do Maranhão
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Programa de Pós-Graduação: |
PROGRAMA DE PÓS-GRADUAÇÃO EM QUÍMICA/CCET
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Departamento: |
QUIMICA
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País: |
BR
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Palavras-chave em Português: |
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Palavras-chave em Inglês: |
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Área do conhecimento CNPq: |
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Link de acesso: |
http://tedebc.ufma.br:8080/jspui/handle/tede/952
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Resumo: |
In the present work it was made a theoretical quantum study in level DFT, being used the program Gaussian 09, to verify parameters as: distances and bond angles, electronic configuration, interaction energy and vibrational frequencies for the compounds dibenzotetraaza[14]anulele of first transition line metals MII(DBTAA), and their different spin states, to verify their catalytic potential front the oxygen reduction reaction. Used the basis sets B3LYP with Lanl2DZ, used for transition metals and 6- 31G*, for others atoms. Calculations showed that compounds of Ti, V and Cr come stable in high-spin, while Mn and Fe in Spin middleman and Co, Ni, Cu and Zn in low-spin. Interaction energy and gap HOMO-LUMO were performed, which show that stability increases with atomic number of the metal, in agreement with the Irving-Williams s series, presenting Ni(DBTAA) as stableer and Ti(DBTAA) as the more reagent of the group. |