COPPER(II) CATECHOL COMPLEXES: SYNTHESIS, SPECTROSCOPIC STUDY AND ELECTROCHEMISTRY OF COPPER(II)-BIS NAPHTHYLAZO IMIDAZOLE/ BENZIMIDAZOLE / PYRIDINE CATECHOL COMPLEXES

摘要

Reaction of copper chloride [CuCl2] with NaaiR' in acetone medium following ligand(catechol) addition leads to [Cu(NaaiR~/)(cat)] where NaaiR~/ = naphthylazo imidazole /benzimidazole /pyridine = -C_(10)H4-N=N- / -C3H2-NN-1-R~/, (R = imidazole) / -C7H4-NN-1-H (Benzimidazole), / -C3H4-N-(Pyridine), abbreviated as -N,N/-chelator, where -N(imidazole) and -N(azo) represent N and N7, respectively; R~/ = H(a), Me (b)]. The ~1H NMR spectral measurements suggest the molecular structure of the chelated complex with the protons at the aromatic region and naphthyl protons at higher (partial deriv) "value. ~(13)C NMR spectrum suggest the molecular skeleton. The voltammogramalso shows a small anodic peak at 0.2 V, possibly due to the Cu(I)/Cu(0) couple.