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Chemical structures: (a) 2-(Dimethylammonium)ethyl methacrylate hexoxy p-coumarate ([DMAEM+ HexOCou-]), (b) 1-vinylimidazolium p-hexoxy coumarate ([VIm+ HexOCou-]), (c) 4-vinylanilinium p-hexoxy coumarate ([VAn+ HexOCou-]) and (d) 4-Vinylpyridinium p-hexoxy coumarate ([VPy+ HexOCou-]); Representation of an immersion of mild steel 1020 surface in an aqueous solution containing the ionic liquid monomer inhibitors.
