Synthesis, Characterization and Thermal Studies of Rh(III) Complexes Derived from Bidentate Schiff Bases

Abstract

The Schiff base ligands were derived from 2-hydroxy-3-methoxybenzaldehyde (HL₁), 4- hydroxy-3-methoxybenzaldehyde (HL₂), with p-toluidine and 3-hydroxybenzaldehyde with 4- hydroxybenzhydrazide (HL3) and 3-hydroxy-2-naphthoic hydrazide (HL₄). The Rh(III) metal complexes of these Schiff base ligands have been synthesized and characterized by IR, electronic, ¹H NMR spectra as well as by elemental analysis, thermogravimetry, molar conductance and magnetic susceptibility measurements. IR and ¹H NMR data shows that all the Schiff bases behave as bidentate and coordinated to Rh(III) via nitrogen and oxygen.