Synthesis, structures and biological activity of copper(II) and zinc(II) Schiff base complexes derived from aminocyclohexane-1-carboxylic acid. New type of geometrical isomerism in polynuclear complexes

Add time:07/22/2019    Source:sciencedirect.com

Four new Cu(II) complexes and one Zn(II) complex of the formula {Cu(salChx)}2n⋅nCH3OH, [Cu(salChx)(imidazole)], [Cu(salChx)(pyrazole)], [Zn2(μ-salChx)2(CH3OH)2] and [Cu2(μ-MeOsalChx)(MeOsalChx)(H2O)2]4⋅3H2O (where salChx is dianion of Schiff-base ligand obtained by condensation of salicylaldehyde with 1-aminocyclohexane-1-carboxylic acid and MeOsalChx is dianion of Schiff-base ligand obtained by condensation of 3-methoxysalicylaldehyde with 1-aminocyclohexane-1-carboxylic acid) have been synthesized and crystallographically fully characterised. Four different geometrical isomers [Cu2(μ-MeOsalChx)(MeOsalChx)(H2O)2] constitute the latest coordination compound together with three crystalline water molecules. They represent a new type of geometrical isomerism in coordination chemistry. Antimicrobial and antiradical activities of all five complexes were assayed.

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