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001-es BibID:	bibEBI00021959
Első szerző:	Sóvágó Imre (vegyész)
Cím:	Effects of mixed-ligand complex formation on deprotonation of amide groups in acid amides and peptides / Imre Sóvágó, Béla Harman, Arthur Gergely, Barbara Radomska
Dátum:	1986
ISSN:	0300-9246 1364-5447
Megjegyzések:	The stability constants of the parent complexes of the A ligands glycinamide, glycylglycinamide, and N-acetylhistidine with copper(II), and of the mixed complexes formed with the B ligands glycine, 2,3-diaminopropionic acid, tiron, histamine, L-histidine, and 2,2'-bipyridyl, have been determined from pH-metric measurements. It has been found that glycinamide forms mixed-ligand complexes of composition [CuAB] and [CuABH-1](charges omitted), and most favourably with histamine, L-histidine, or 2,2'-bipyridyl. In the glycylglycinamide complexes of type [CuABH-1] the B ligand is co-ordinated to a considerable extent via two equatorial sites, while the bonding in the complex [CuABH-2], similarly to the other dipeptides, is mainly axial-equatorial. In the parent complexes of copper(II) with N-acetylhistidine and with N-acetylhistamine, deprotonation and co-ordination of the amide group could not be detected. It has been found, however, that the presence of B ligands containing an aromatic N donor permits deprotonation of the amide groups in both N-acetylhistidine and N-acetylhistamine.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Journal of the Chemical Society. Dalton Transactions. - 1986 : 2 (1986), p. 235-239. -
További szerzők:	Herman Béla Gergely Arthur (1921-1986) (kémikus) Radomska, Barbara
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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