Synthesis, spectral and electrochemical studies of some Schiff base N2O2 complexes

Figure: Nyquist plots for steel in 1.0 M sulphuric acid containing 10% (v/v) ethanol in the presence of [1], 0.0 M; [2], 1.0 × 10− 4 M; [3], 1.5 × 10− 4 M; [4], 2 × 10− 4 M; [5], 3.5 × 10− 4 M and [6], 4 × 10− 4 M of Cu-salpr.