SYNTHESIS, CHARACTERIZATION, AND ANTIBACTERIAL ACTIVITY OF TWO ZINC(II) COMPLEXES WITH SCHIFF BASES DERIVED FROM RIMANTADINE

摘要

the reactions of zinc(II) chloride and two Schiff base ligands derived from rimantadine and 5-chlorosalicylaldehyde/4-methoxysalicylaldehydes, generated two novel complexes [Zn(L~1)_2Cl_2] (I) and [Zn(L~2)_2Cl_2] (II), where L~1 = 2-((1-(1-adamantan-1-yl)ethyl)-iminomethyl)-4-chlorophenol, L~2 = 2-((1-(1-adamantan-1-yl)ethyl)iminomethyl)-5-methoxyphenol. The complexes were characterized by the means of IR, ~1H NMR, elemental analysis, molar conductance and thermal analysis. A single-crystal X-ray diffraction analysis reveals that both complexes crystallize in orthorhombic system, space group Fdd2 for I and Pbcn for II. In two complexes crystals, each asymmetric unit consists of one zinc(II) ion, two corresponding Schiff base ligands and two chlorine atoms; the central zinc atom lies on a twofold rotation axis and is four-coordinate via two chlorine atoms and two oxygen atoms from the Schiff base ligands, forming a distorted tetrahedral geometry.