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Equilibria in cobalt(II)- amino acid- imidazole system under oxygen-free conditions. Part I. Studies on mixed ligand systems with L-α-alanine.
Autorzy
Rok wydania
2006
Czasopismo
Numer woluminu
80
Strony
1959-1966
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Glass electrode, potentiometry and UV/Vis spectrophotometry experiments have been carried out in order to determine the equilibria in an oxygen-free Co(II)-Amae-Himid system in aqueous solution, where Amac = L-alpha-alanine and Himid = 1,3-diazole (imidazole). The presence of axial imidazole in the structure of the ternary complex was implicated by using a [Co(imid)(2)](n) polymer as starting material. Two proposed coordination modes of the mixed-ligand complex have been confirmed both by suitable experimental methods and by a fitting procedure (using EMF and absorbance data). One of these coordination modes is known as a model imitating the metal center in hemoglobin, whereas the other one has not been considered as yet.
Podobne publikacje
Equilibria in cobalt(II)–amino acid–imidazole system under oxygen-free conditions: effect of side groups on mixed-ligand systems with selected L-α-amino acids.
Woźniczka Magdalena, Vogt Andrzej, Kufelnicki Aleksander