Study of copper(II) polyazamacrocyclic complexes by electronic absorption spectrophotometry and EPR spectroscopy

• Tipo: Artigo em Revista Científica Internacional
• Data: 2000

Autores

Geraldes, CFGC (Autor) Outra; Marques, MPM (Autor) Outra; de Castro, B (Autor) FCUP; Pereira, E (Autor) FCUP

Revista

Título: European Journal of Inorganic Chemistry

Páginas: 559-565

ISSN: 1434-1948

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 27 Citações

Scopus - 29 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-001-0NG

Abstract (EN): Copper(II) mononuclear complexes with the polyazamacrocyclic ligands NOTA (1,4,7-triazacyclononane-N,N',N "-triacetate), DOTA (1,4,7,10-tetraazacyclo-dodecane-N,N',N ",N'''-tetraacetate), NOTP [1,4,7-triazacyclononane-N,N',N "-tris(methylenephosphonate)] and DOTP [1,4,7,10-tetraazacyclododecane-N,N',N ",N'''-tetrakis(methylenephosphonate)] were characterised in aqueous solution by electronic absorption spectrophotometry and electron paramagnetic resonance (EPR) spectroscopy. While two isomeric species were detected by EPR spectroscopy in frozen samples of the polycarboxylate complexes, only one complex form was found for the poly(methylenephosphonate) systems. The results obtained are in accordance with a six-coordinate pattern for the metal centre, yielding tetragonally distorted complexes in solution, in agreement with previously reported studies on Cu-II complexes, both in solution and in the solid state.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7