Sanna, Daniele and Agoston, Csaba Gábor and Sóvágó, Imre and Micera, Giovanni (2001) Potentiometric and spectroscopic studies on the copper(II) complexes formed by oligopeptides containing histidine with a protection at the terminal amino group. Polyhedron, Vol. 20 (9-10), p. 937-947. ISSN 0277-5387. Article.
Full text not available from this repository.
Copper(II) complexes of oligopeptides with protected amino groups (Z-His-OH, Z-HisGly-OH, Z-GlyHis-OH and Z-GlyGlyHis-OH) were studied by potentiometric and spectroscopic methods. The involvement of the imidazole nitrogen in metal binding was proved in slightly acidic media. The deprotonation and coordination of the amide nitrogen atoms from the carbamate or peptide CONH--- moieties occurred around pH 7, which resulted in the formation of 2N (Z-His-OH and Z-HisGly-OH), 3N (Z-GlyHis-OH) and 4N (Z-GlyGlyHis-OH) complexes supporting the anchoring ability of the imidazole rings. Ternary complexes with 2,2′-bipyridine,
I documenti depositati in UnissResearch sono protetti dalle leggi che regolano il diritto d'autore
Repository Staff Only: item control page