Synthesis and reactivity towards dioxygen of a series of five-coordinated complexes between N,N′-(3,3′-dipropylmethylamine)bis(2-hydroxy-1-naphthylidenamine) and the metal ions Mn(II), Fe(II), Co(II), Ni(II) and Cu(II)

✍ Scribed by R. Cini; P. Zanello; A. Cinquantini; A. Colligiani; C. Pinzino; G. Valentini

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 188 KB
• Volume: 79
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)95237-x

✦ Synopsis

of the pH and of the concentrations of buffers and acetonitrile.

With the trans-14-macrocycle IV the kinetics are completely described by a second order rate constant: -

For the other ligands, the same rate law is obtained from initial rates. Stability constants and standard potentials of the CuL'+/CuL' couples are correlated to the kinetics of autoxidation.

As an example, with V the electrode potential is too high to allow the accumulation of H202 under our experimental conditions (pH = 6-8) in line with the insignificant rate of autoxidation.

The correlation of redox potentials with the kinetics of autoxidation will be discussed in detail.