Abstract
The complexation of protonated retinal Schiff bases of tert-butylamine (HClO 4 and HAuCl 4 salt, respectively) with N-methylacetamide were studied in CD 2Cl 2 solution by Fourier transform- infrared (FT-IR) spectroscopy. The N-methylacetamide forms complexes with the protonated Schiff base in which the NH and CO bonds are involved and in which the N-methylacetamide isomerises from the trans to the cis configuration. The formation of these complexes is strongly influenced by the types of anion present. The tetrachloroaurate anion interacts with the N +H group of the Schiff base and consequently influences the nature of the retinal residue. No complexation occurs with N, N-dimethylacetamide.
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