PHENOTHIAZINE CHALCONE COMPLEXES: SYNTHETIC AND STRUCTURAL STUDIES

*Seema I. Habib and Tanaji Bansode

ABSTRACT

Twelve transition metal complexes of substituted phenothiazine chalcones were synthesized by condensing phenothiazine chalcones with transition metal halides. The chalcone can be prepared by reacting 2-acetyl phenothiazine with P-chloro benzaldehyde and P-methoxy benzaldehyde. Further the synthesized ligands and the metal complexes were characterized and analysed by using different elemental and spectral analysis viz IR, 1H-NMR, TGA-DTA, Magenetic Moment, Molar Coductivity etc. The analytical data confirm the stoichiometry of metal to ligand as 1:2. The molar conductivity data confirms the non electrolytic nature of all the metal complexes. The 1H-NMR spectra of complexes shows broad peaks due to complex pattern of splitting. The thermal study shows the presence of coordinated water molecule in some complexes. The Co (II), Ni (II), Fe (II), and Zn (II) shows octahedral geometry whereas Mn(II) and Cu (II) shows tetrahedral geometry.

Keywords: 2-acetyl phenothiazine chalcones, Transition Metal Complexes, Spectral analysis.