Synthesis, structure and redox properties of an unexpected trinuclear copper(II) complex with aspartame: [Cu(apm)(2)Cu(mu-N,O : O '-apm)(2)(H2O)Cu(apm)(2)(H2O)]center dot 5H(2)O

Página do item simplificado
dc.contributor.authorCavicchioli, M.
dc.contributor.authorMassabni, Antonio Carlos [UNESP]
dc.contributor.authorFerreira, AMD
dc.contributor.authorCastellano, E. E.
dc.contributor.authorCrespi, Marisa Spirandeli [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:24:29Z
dc.date.available2014-05-20T15:24:29Z
dc.date.issued2005-12-01
dc.description.abstractStructural, magnetic and spectroscopic data of a new trinuclear copper(II) complex with the ligand aspartame (apm) are described. [Cu(apm)(2)CU(mu-N,O:O'-apm)(2)(H2O)Cu(apm)(2)(H2O)]-5H(2)O crystallizes in the triclinic system, space group P1 (#1) with a = 7.3300(1) angstrom, b = 15.6840(1) angstrom, c = 21.5280(1) angstrom, alpha = 93.02(1)degrees, beta = 93.21 (1)degrees, gamma = 92.66(1)degrees and Z = 1. Aspartame coordinates to Cu(II) through the carboxylate and beta-amino groups. The carboxylate groups of the two central ligands act as bidentate bridges in a syn-anti conformation while the carboxylate groups of the four peripheral ligands are monodentate in a syn conformation. The central copper ion is in a distorted square pyramidal geometry with the apical position being occupied by one oxygen atom of the water molecule. The two terminal copper(II) atoms are coordinated to the ligands in the same position but their coordination sphere differs from each other due to the fact that one copper atom has a water molecule in an apical position leading to an octahedral coordination sphere while the other copper atom is exclusively coordinated to aspartame ligands forming a distorted square pyramidal coordination sphere. Thermal analysis is consistent with the X-ray structure. EPR spectra and CV curves indicate a rupture of the trinuclear framework when this complex is dissolved in ethanol or DMF, forming a mononuclear species, with a tetragonal structure. (c) 2005 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista Julio Mesquita Filho, Inst Quim, Dept Quim Geral & Inorgan, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniv São Paulo, Inst Quim, BR-05508900 São Paulo, Brazil
dc.description.affiliationUSP, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista Julio Mesquita Filho, Inst Quim, Dept Quim Geral & Inorgan, BR-14801970 Araraquara, SP, Brazil
dc.format.extent4431-4436
dc.identifierhttp://dx.doi.org/10.1016/j.ica.2005.09.027
dc.identifier.citationInorganica Chimica Acta. Lausanne: Elsevier B.V. Sa, v. 358, n. 15, p. 4431-4436, 2005.
dc.identifier.doi10.1016/j.ica.2005.09.027
dc.identifier.issn0020-1693
dc.identifier.lattes7471310113999140
dc.identifier.urihttp://hdl.handle.net/11449/35090
dc.identifier.wosWOS:000234041600003
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofInorganica Chimica Acta
dc.relation.ispartofjcr2.264
dc.relation.ispartofsjr0,485
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectcopper complexpt
dc.subjectaspartamept
dc.subjectX-ray crystal structurept
dc.subjectEPRpt
dc.subjectcyclic voltammetrypt
dc.titleSynthesis, structure and redox properties of an unexpected trinuclear copper(II) complex with aspartame: [Cu(apm)(2)Cu(mu-N,O : O '-apm)(2)(H2O)Cu(apm)(2)(H2O)]center dot 5H(2)Oen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes7471310113999140
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

Arquivos

Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Química Inorgânica - IQ