quinolinyl triazole derivatives-dominant inhibitors for mild steel in hydrochloric acid

Quinolinyl triazole derivatives 4-(4-chlorophenyl)-5-{[(5-chloroquinolin-8-yl)oxy]methyl}-2,4-dihydro-3h-1,2,4-triazole-3-thione (4-4cpcqmt), 4-(3-chlorophenyl)-5-{[(5-chloroquinolin-8-yl)oxy]methyl}-2,4-dihydro-3h-1,2,4-triazole-3-thione (4-3cpcqmt) and 4-(4-fluorophenyl)-5-{[(5-chloroquinolin-8-yl)oxy]methyl}-2,4-dihydro-3h-1,2,4-triazole-3-thione (4-4fpcqmt) are of great importance in pharmaceutical chemistry such as antifungal, antituberculosis, anticonvulsant, anticancer activities, etc. the present work highlights the synthesis of the quinolinyl triazole derivatives ((4-4cpcqmt, 4-3cpcqmtand 4-4fpcqmt). the substituents present and the compounds 4-4cpcqmt, 4-3cpcqmtand 4-4fpcqmt were confirmed by ftir and nmr spectroscopy. these compounds having many reactive sites were used as inhibitors for mild steel in 1.0 m hydrochloric acid medium at 303 to 323k. an inhibition study was done by electrochemical measurement. the prevention efficiency is in the order 4-4fpcqmt>4-4cpcqmt>4-3cpcqmt. the surface morphology of the mild steel surface was done using sem, afm, and, edx.