Under ultrasonication, cadmium nitrate tetrahydrates, ethyl nicotinate (EN), and potassium thiocyanate as connecting ligand self-assembled to form the nanosized supramolecular coordination polymer (NSCP1) and the crystalline supramolecular coordination polymer (SCP1) [Cd(EN)(SCN)]. Single crystal SCP1 X-ray diffraction (XRD) revealed that Cd has an octahedral shape. The network structure of SCP1 is composed of chair conformation cyclic [Cd(SCN)] building blocks that form a one dimensional (1D) chain with bilaterally coordinated EN.
View Article and Find Full Text PDFTwo 3D-supramolecular coordination polymers (SCP1 & SCP2) have been synthesized and characterized by physicochemical and spectroscopic methods. In a solution of 1.0 M HCl, SCPs were used to prevent corrosion of carbon steel (CS).
View Article and Find Full Text PDFAluminum corrosion inhibitors "{[CuI (CN)(phen) CuII (CN)(phen)]5HO},(MOF1) and {[CuI(CN)(phen)CuII(CN)(phen)]5HO}@TiO (MOF1@TiO) were studied in one molar HCl solution". The ML results for three different temperatures (25-45 °C) were compared with the results of PDP and EIS analyses. The adsorption of inhibitors on Al surfaces has been calculated and discussed by a Langmuir isotherm.
View Article and Find Full Text PDFNovel supramolecular (SCPs) compounds such as: {[Ni (EIN)(NCS)]}, SCP1 and {[Co (EIN) (NCS)]}, SCP2 have been studied using weight loss (WL) and electrochemical tests on the corrosion performance of stainless steel 304 (SS304) in 1.0 M hydrochloric acid (HCl) solution. The experimental results revealed that inhibition efficacy (%) rises with increasing concentrations of SCPs and reached 92.
View Article and Find Full Text PDFThe inhibition efficiency and adsorption affinity were investigated for two novel compounds, namely: 6-methoxy-2-naphthyl-[2, 2'-bithiophene]-5-carboxamidine hydrochloride salt (MA-1440) and 5'-(4-chlorophenyl)-2, 2'-bifuran-5-carboxamidine hydrochloride salt (MA-1456). The inhibition study was conducted on carbon steel surface in 1.0 M HCl with different inhibitor doses and different temperature levels, to investigate the optimum dose and preferable temperature.
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