SYNTHESIS, INHIBITOR-BIOCIDE ACTIVITY OF N, N-DI (9H-FLUOREN-9-YLIDENE) BENZENE-1,4- AND N, N-DI (9H-FLUOREN-9-YLIDENE) NAPHTHALENE-1,5-DIAMINES

Abstract

Schiff bases of N1,N4-di(9H-fluoren-9-ylidene)benzene-1,4-diamine (1) and N1,N5- di(9H-fluoren-9-ylidene)naphthalene-1,5-diamine(2) were synthesized by new simple and high yield synthetic procedure. The structures of the synthesized compounds of 1 and 2 were confirmed by elemental, 1H NMR, mass spectroscopic and Single-crystal X-ray analyses. The prepared compounds were evaluated as antibacterial agents against sulfate-reducing bacteria using the serial dilution method, which showed good biocide action. The compounds were tested as corrosion inhibitors against the corrosion of carbon steel in a model of mineralized produced water containing hydrogen sulfide (H2S) and carbon dioxide (CO2) using weight loss methods. The results revealed that these compounds have significant inhibiting effects on the corrosion of carbon steel.