Formation equilibria of copper(II) ternary complexes with (S)-leucinehydroxamic acid and (R)- or (S)-amino acids in aqueous solution

被引：8

作者：

Dallavalle, F ^{[1
]}

Folesani, G ^{[1
]}

Leporati, E ^{[1
]}

Borromei, R ^{[1
]}

机构：

[1] Univ Parma, Dipartimento Chim Gen & Inorgan Chim Analit Chim, I-43100 Parma, Italy

来源：

JOURNAL OF COORDINATION CHEMISTRY | 1998年 / 44卷 / 3-4期

关键词：

aminohydroxamic acids; amino acids; copper(II); ternary complexes; stability constants; potentiometry;

D O I：

10.1080/00958979808023075

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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 degrees C and I = 0.5 mol dm(-3) (KCl). The mixed species [CuLA] and [CuLH-(1)A](-) (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.

引用

页码：225 / 235

页数：11

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