E. Prenesti et al., Spectrum-structure correlation for visible absorption spectra of copper(II) complexes in aqueous solution, POLYHEDRON, 18(25), 1999, pp. 3233-3241
In this study an analysis of visible spectrophotometric data was carried ou
t using more than 100 copper(II) complexes formed by ligands with different
coordination environments, and whose aim is the lambda(max) value estimati
on for equatorially-coordinated copper(II) complexes in solution. Calculati
ons were performed with a least-squares procedure and a bootstrap-based met
hod for accuracy assessment. The,results obtained are in good agreement to
previous reports describing the coordination of amino, peptide (negatively
charged), pyridine-imidazole nitrogen and carboxylate oxygen, while it was
possible to calculate an individual contribution for hydroxide, alcoholate
and water oxygen donors. The spectrum-structure correlation for copper(II)
complexes in solution is widely discussed in this paper, and an estimation
of the uncertainty in relation to the prediction of lambda(max) of copper(I
I) complexes has also been made. (C) 1999 Elsevier Science Ltd. All rights
reserved.