Abstract
Copper(I) complexes of imidazoline-2-thione (lmt), 1-methylimidazoline-2-thione (Mlmt) and 1,3-dimethylimidazoline-2-thione (DMImt) of the form CuLCl and CuL2Cl (where L = Imt and L = Mlmt, DMImt) were studied by Raman spectroscopy as models of corrosion inhibition products formed on copper. A Raman microscope was used to obtain vibrational spectra in situ from actual surface products on metallic copper in an acidic aqueous environment containing imidazole-thiones as corrosion inhibitors. Comparison of the spectra suggests that the model complexes form a significant part of the corrosion inhibition film in these systems.
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