Transition metal complexes of bis(imidazol-2-yl) derivatives of dipeptides. (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Transition metal complexes of bis(imidazol-2-yl) derivatives of dipeptides. (Articolo in rivista) (literal)

Anno

• 2003-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1039/B211413E (literal)

Alternative label

• Ösz K., Várnagy K., Süli-Vargha H., Sanna D., Micera G., Sóvágó I. (2003)
  Transition metal complexes of bis(imidazol-2-yl) derivatives of dipeptides.
  in Dalton transactions (2003. Online)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Ösz K., Várnagy K., Süli-Vargha H., Sanna D., Micera G., Sóvágó I. (literal)

Pagina inizio

• 2009 (literal)

Pagina fine

• 2016 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://pubs.rsc.org/en/Content/ArticleLanding/2003/DT/b211413e (literal)

Rivista

• Dalton transactions (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 21, Hungary Research Group of Peptide Chemistry, Hungarian Academy of Sciences, P.O. Box 32, Hungary Istitutio C.N.R. di Chimica Biomolecolare, Sezione di Sassari, Trav. La Crucca 3 Reg. Baldinca, Italy Department of Chemistry, University of Sassari, Via Vienna 2, Italy (literal)

Titolo

• Transition metal complexes of bis(imidazol-2-yl) derivatives of dipeptides. (literal)

Abstract

• Copper(II), nickel(II) and zinc(II) complexes of the dipeptides containing chelating bis(imidazolyl) agents at the C-termini (GlyLeu-BIMA, LeuGly-BIMA, PheGly-BIMA and AlaPro-BIMA; BIMA = bis(imidazol-2-yl)-methylamine) were studied by potentiometric, UV-VIS, EPR and MALDI-MS techniques. The imidazole nitrogen donor atoms were described as the primary metal binding sites forming stable mono- and bis-(ligand) complexes in the acidic pH range. The formation of dinuclear complexes was detected in equimolar solutions of copper(II) and dipeptides and various isomeric forms of these species ([Cu2L2]4+ and [Cu2H-2L2]2+) were indenti.ed by EPR measurements. Deprotonation and co-ordination of the amide groups of dipeptides took place in slightly alkaline solution resulting in the formation of [MH-2L] complexes of copper(II) and nickel(II). Metal ion co-ordination of one of the imidazole nitrogen donor atoms promoted the ionization of the pyrrole type N(1)H group of imidazole in copper(II) complexes and resulted in the formation of a trinuclear complex ([Cu3H-6L2]). The latter species contains negatively charged bridging imidazolato residues. (literal)

Prodotto di

• Institute of biomolecular chemistry (ICB) (Istituto)

Autore CNR

• DANIELE SANNA (Unità di personale interno)

Incoming links:

Autore CNR di

• DANIELE SANNA (Unità di personale interno)

Prodotto

• Institute of biomolecular chemistry (ICB) (Istituto)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Dalton transactions (Rivista)