FORMATION EQUILIBRIA OF COPPER(II) TERNARY COMPLEXES WITH (S)-LEUCINEHYDROXAMIC ACID AND (R)- OR (S)-AMINO ACIDS IN AQUEOUS SOLUTION
Titel:
FORMATION EQUILIBRIA OF COPPER(II) TERNARY COMPLEXES WITH (S)-LEUCINEHYDROXAMIC ACID AND (R)- OR (S)-AMINO ACIDS IN AQUEOUS SOLUTION
Auteur:
Dallavalle, Francesco Folesani, Giuseppina Leporati, Enrico Borromei, Renato
Verschenen in:
Journal of coordination chemistry
Paginering:
Jaargang 44 (1998) nr. 3-4 pagina's 225-235
Jaar:
1998-07-01
Inhoud:
Solution equilibria of binary copper(II) complexes with (S)-leucinehydroxamic acid and of ternary complexes with (R)- or (S)-amino acids (valine, proline, phenylalanine, tryptophan) were studied by potentiometry and electronic spectrophotometry at T=25°C and I= 0.5moldm-3 (KCl). The mixed species [CuLA] and [CuLH-IA]- (L-=leucinehydroxamate, A-= aminoacidate), do not present stereoselectivity, but are strongly stabilized with respect to their parent binary complexes. Possible structures of the ternary complexes are proposed.