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001-es BibID:	BIBFORM086036
Első szerző:	Enyedy Éva Anna (vegyész)
Cím:	Effects of side chain amino nitrogen donor atoms on metal complexation of aminohydroxamic acids: New diaminohydroxamates chelating Ni(ii) more strongly than Fe(iii) / Éva A. Enyedy, Hajnalka Csóka, István Lázár, Giovanni Micera, Eugenio Garribba, Etelka Farkas
Dátum:	2002
ISSN:	0300-9246 1364-5447
Megjegyzések:	Complexes of diaminohydroxamic acids 2,6-diamino-N-hydroxyhexanamide (lysinehydroxamic acid, Lysha), 2,4-diamino-N-hydroxybutanamide (2,4-diaminobutyrohydroxamic acid, Dambha) and 2,3-diamino-N-hydroxypropanamide (2,3-diaminopropionohydroxamic acid, Dampha) with manganese(II), cobalt(II), iron(II), nickel(II), copper(II), zinc(II), iron(III), aluminium(III) and molybdenum(VI) in aqueous solution were studied by pH-potentiometric, UV-visible spectrophotometric and EPR methods. The two latter diaminohydroxamic acids were synthesised as new ligands and characterised. The results were compared to those of a simple alpha-amino acid derivative, alpha-alaninehydroxamic acid (alpha-Alaha) and the effects of the side chain amino group on the co-ordination mode and on the stability of the complexes formed were evaluated. As expected, the side chain amino nitrogen atom of Lysha does not co-ordinate to any of the studied metals but remains free for possible further interactions. The amino groups do not co-ordinate to aluminium(III) or iron(III) at all and the closer the side chain amino group is situated to the alpha-aminohydroxamic residue the less stable the hydroxamate complex formed in the order of Lysha, Dambha, Dampha, and hydrolytic processes become increasingly dominant. The co-ordination of the side chain amino nitrogen of Dampha and Dambha to nickel(II) and copper(II) was unambiguously observed.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Journal of the Chemical Society. Dalton Transactions. - 13 (2002), p. 2632-2640. -
További szerzők:	Csóka Hajnalka Lázár István (1959-) (vegyész) Micera, Giovanni Garribba, Eugenio Farkas Etelka (1948-) (vegyész)
Pályázati támogatás:	T034674 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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