New Tetradentate ligand [N, N΄- Bis (Quinoline-2- Carboxamide) - 4-Nitrobenzene] and Cobalt Complexes, Synthesis and Characterization

Some cobalt (III) compounds of the type [CoIII (bqbNO2)(L)2]X, L = N3 -, pipyridine, morpholine, benzylamine, aniline, pyridoxine, pyrrole and X= ClO4 - , (n-Bu)4N+ withNew ligand [H2bqbNO2 = N, N΄- Bis (Quinoline - 2 – Carboxamide) - 4- Nitrobenzene] have been synthesized and characterized by IR and UV–Vis spectroscopy. This ligand isa dianionic tetradentate, furnishing a N4 set, such that two N atoms of the two pyridine rings and two amido N atoms occupy four equatorial positions, thus deprotonated ligand is a strong σ-donor capable of stabilizing metal ions in high oxidation states. One goal of this project is synthesis of new compounds with using of method ionic liquid as a solvent in which the reaction can be to reduce pollution, high speed and without the use of harmful solvents could be mentioned. Green chemistry searches for environmentally friendly reaction media and strives to increase the reaction rate and efficiency. One of the key is the replacement of hazardous solvents with Ionic liquids [1].Amide linkages in a biochemical context are called peptide linkages and constitute a defining molecular feature of proteins. Low molecular weight amides, such as dimethylformamide is common solvent and many drugs and dyes, such as penicillin, folic acid, barbiturates and indigo, are amides too. Metal complexes of many amido ligands have been extensively used to mimic the properties of biologically active systems, use in catalysis and for selective binding of the toxic metal ion or as building blocks of new functional metal complexes [2, 3].