DOI: https://doi.org/10.55373/mjchem.v24i2.302

Keywords: Amide; dichromate; propyl; spacer; titration

Abstract

Amide compounds are appealing organic ligands that can be further customized to produce a wide range of coordination polymers or metal-organic frameworks. Because of their crucial significance as anion receptors, they have also been a target used in the biological and chemical industries as potential materials for separation or chemical sensor. In this study, the addition of a propyl spacer to an amide ligand was utilized to increase flexibility, size of cavity, and potentiality of the molecules as anion receptors. Therefore, in this study, two flexible amide containing propyl spacer, namely bis[N,N’-6-(3-pyridylmethylamido)pyridyl-2-carboxyamido]propane (L1), and bis[N,N’-6-(4-pyridylmethylamido)pyridyl-2-carboxyamido]propane (L2), which were obtained from the reaction between N-6-[(3-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic acid methyl ester with 1,3-propylenediamine, respectively, were utilized. Combination of typical analytical and spectroscopy techniques such as Nuclear Magnetic Resonance (NMR), Fourier Transform Infrared (FTIR), and Ultraviolet-Visible (UV-Vis) were used to characterize these two isomers. Initial investigation on the potential of these compounds to act as anion receptors was carried out using anion titration techniques. The results obtained from this method showed that L1 and L2 have promising potential to interact with dichromate anions compared to nitrate and chloride.