PREPARATION AND CHARACTERIZATION OF MN(II), CO(II) AND CU(II) COMPLEXES WITH SCHIFF BASE DERIVED FROM SULFADIAZINE AND 2-ACETYLFURAN

Abstract

Three new complexes of Mn(II),Co(II) and Cu(II) with Schiff base derived from condensation reaction between sulfadiazine and 2-acetylfuran in methanol were synthesized and characterized based on solubility screening, melting point/decomposition temperature, Infrared spectroscopy elemental analyses and molar conductance measurements. The Schiff base which was isolated as a yellow powder, has a melting point temperature of 209^oC and percentage yield of 89.40%. The Schiff base and its metal (II) complexes were soluble in polar organic solvents and insoluble in non-polar solvents. The values of the decomposition temperature for the complexes were high in the range of 217-243 ^oC. Appearance of a new band at 1618 cm^-1 in the IR spectrum of the Schiff base confirms the formation of azomethine linkage between sulfadiazine and 2-acetylfuran. Upon coordination to the metal ions the band for v(C=N) stretching undergoes a shift to higher wave numbers. The bands within 668– 687cm^-1 attributable to v(M-N) vibration modes. The empirical formula calculation of the complex compounds indicated the formula [ML₂]. The molar conductance values of the complexes were low, which indicate the non-electrolytic nature of the metal complexes.