Synthesis, Spectroscopic and Antibacterial Studies of New Schiff-base and Organophosphorus Schiff-base with Some Transition Metal(II) Ions

Abstract

A new transition metal complexes of Cu (II), Co (II) , and Ni (II) were
synthesized from the Schiff base (2-Furalidene-1-phenylsemicarbazide SB) and the
organophosphorus Schiff base (2-Furalidenediphenylphosphate-1-
phenylsemicarbazide OPSB). The ligands were characterized from their metal
analysis, IR, UV-Vis, NMR, and XRD spectral studies. The structural features of
complexes were obtained by their elemental analyses, magnetic susceptibility, molar
conductance, IR, UV-Vis spectral, and molar ratio studies. The data showed that these
complexes have the composition of ML2 for SB ligand and ML for OPSB. According
to the UV-Vis, magnetic susceptibility data the octahedral geometry was suggested
for all complexes. From XRD results, the practical size of ligands and SB complexes
were in the nano range with crystallinity structure. The ligands and their metal
complexes have been screened for their antioxidant, antibacterial and antifungal
activity.