SYNTHESIS AND CHARACTERIZATION OF METAL COMPLEXES OF A N-(FURAN-2-YLMETHYLIDENE)- PYRAZINE-2-CARBOXAMIDE SCHIFF BASE

Abstract

The Fe(III), Ru(III), Co(II), Ni(II), Cu(II), Pd(II), Zn(II), Cd(II) and Hg(II) complexes of a Schiff base derived from pyrazine-2-carboxamide and furan- 2-carbaldehyde (FMPCA: 1) have been synthesized and structurally characterized by various physico-chemical data. The ligand acts as a neutral, bidentate one towards the metal ions coordinating through azomethine nitrogen and furan oxygen. The geometry and the bonding characteristics associated with the complexes have been deduced from relevant spectral data. Consolidating all the data obtained Fe, Ru, Co, Ni and Cu Complexes have been assigned to octahedral geometry, Pd complex, a square planar geometry and the Zn, Cd and Hg complexes tetrahedral in geometry. Further, the ligand and the metal complexes have been screened for their antimicrobial activity, the Hg complex exerting the highest activity.