The synthesis and characterization of s-triazine bridged calixarene based a Schiff base: Investigation of its [MSalen/Salophen] (M= Cr3+, Fe3+ or Co3+) capped complexes

Abstract

In this study, 2,4-bis((4,6-dichloro-1,3,5-triazin-2-yl)oxy)benzaldehyde, was obtained by reacting cyanuric chloride with 2,4-dihydroxybenzaldehyde at 0 °C. Then, s-triazine bridged calixarene codded as TABCA1 was obtained by reacting the compounds with 2,4-dihydroxybenzaldehide. This s-triazine bridged calixarene ligand, which we coded as TABCA2, was obtained from the reaction of TABCA1 coded compound with 4-aminobenzoic acid at a 1:2 mole ratio, twice. [MSalen/Saloph] capped s-triazine bridged calixaren complexes were obtained from the reaction of TABCA2 codded ligand and the [(MSalen/Saloph)2O] (M=Cr3+, Fe3+ and Co3+) starting complexes in 1,4-dioxane media. The ligand obtained were characterized by using 1H NMR, FT-IR spectroscopy and elemental analysis techniques. The complexes obtained were characterized by using FT-IR, UV–Vis spectroscopies, elemental analysis, magnetic susceptibility, and TGA-DTA techniques. Metal contents of the complexes were determined by using ICP-AES spectroscopy.