Electronic Spectra of Chevreul's Salts

Detalhes bibliográficos
Autor(a) principal: Silva, Luciana A. da
Data de Publicação: 2002
Outros Autores: Andrade, Jailson Bittencourt de, Toma, Henrique E.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/4968
Resumo: p. 624-628.
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spelling Silva, Luciana A. daAndrade, Jailson Bittencourt deToma, Henrique E.Silva, Luciana A. daAndrade, Jailson Bittencourt deToma, Henrique E.2011-12-21T17:04:50Z2011-12-21T17:04:50Z20020103-5053http://www.repositorio.ufba.br/ri/handle/ri/4968v. 13, n. 5.p. 624-628.A série isomórfica de sulfitos duplos com fórmula empírica Cu2SO3.MSO3.2H 2O (onde M é Cu, Fe, Mn ou Cd) é preparada pela substituição do Cu(II) no sal de Chevreul, Cu2SO3.CuSO3.2H 2O, por íons de metais de transição, tais como Fe(II), Mn(II) e Cd(II). Como conseqüência, as espécies isomórficas apresentam colorações distintas. Cálculos de modelagem molecular foram empregados neste trabalho para o centro dimérico [CuI2(SO3) 2(SO3)2]6- . O espectro eletrônico do sal de Chevreul consiste de uma banda de transferência de carga em 425 nm associada ao cromóforo [CuI2(SO3) 2(SO3)2]6- e duas transições de campo ligante a 785 e 1000 nm envolvendo distorção de Jahn-Teller dos níveis do Cu(II). Além disso, uma banda adicional de transferência de intervalência é observada em 500 nm, sendo responsável pela sua coloração vermelha característica. A substituição do íon Cu(II) pelos íons Fe(II), Mn(II) e Cd(II) não elimina a banda de absorção em 425 nm, associada à transição de transferência de carga centrada nos sítios Cu(I), porém a banda original em 500 nm desaparece, em concordância com a atribuição de transição intervalência.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2011-12-21T17:04:50Z No. of bitstreams: 1 12815.pdf: 143847 bytes, checksum: b2fc762b0db9868495e43b8d63ae7b6d (MD5)Made available in DSpace on 2011-12-21T17:04:50Z (GMT). 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dc.title.pt_BR.fl_str_mv Electronic Spectra of Chevreul's Salts
dc.title.alternative.pt_BR.fl_str_mv Journal of the Brazilian Chemical Society
title Electronic Spectra of Chevreul's Salts
spellingShingle Electronic Spectra of Chevreul's Salts
Silva, Luciana A. da
electronic spectra
Chevreul's salt
Isomorphic salts
title_short Electronic Spectra of Chevreul's Salts
title_full Electronic Spectra of Chevreul's Salts
title_fullStr Electronic Spectra of Chevreul's Salts
title_full_unstemmed Electronic Spectra of Chevreul's Salts
title_sort Electronic Spectra of Chevreul's Salts
author Silva, Luciana A. da
author_facet Silva, Luciana A. da
Andrade, Jailson Bittencourt de
Toma, Henrique E.
author_role author
author2 Andrade, Jailson Bittencourt de
Toma, Henrique E.
author2_role author
author
dc.contributor.author.fl_str_mv Silva, Luciana A. da
Andrade, Jailson Bittencourt de
Toma, Henrique E.
Silva, Luciana A. da
Andrade, Jailson Bittencourt de
Toma, Henrique E.
dc.subject.por.fl_str_mv electronic spectra
Chevreul's salt
Isomorphic salts
topic electronic spectra
Chevreul's salt
Isomorphic salts
description p. 624-628.
publishDate 2002
dc.date.issued.fl_str_mv 2002
dc.date.accessioned.fl_str_mv 2011-12-21T17:04:50Z
dc.date.available.fl_str_mv 2011-12-21T17:04:50Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/4968
dc.identifier.issn.none.fl_str_mv 0103-5053
dc.identifier.number.pt_BR.fl_str_mv v. 13, n. 5.
identifier_str_mv 0103-5053
v. 13, n. 5.
url http://www.repositorio.ufba.br/ri/handle/ri/4968
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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