Crystal Structure of Spiro 5,5-Dimethyl Cyclohexane1,2,3-trione 2-phenylhydrazone and Spectral Characterization of its Transition Metal Complexes

摘要

The synthesis and characterization of spiro5,5-dimethylcyclohexane1,2,3-trione2-phenylhydrazone, phenylazodimedone (AD) and the characterization of its complexes with Fe(III), Co(II), Ni(II), Cu(II) and Zn(II) have been carried out. AD was found to have the hydrazone form with intra-molecular N-HO hydrogen bond. The complexes were found to have a general formula ML2/ML3 when M is a divalent/trivalent metal, respectively, and L is the mono anion of AD. The structure of AD has been arrived at by various spectral techniques and the presence of hydrogen bonding has been verified by single crystal XRD. The complexes were characterized by elemental analyses, magnetic susceptibility measurements, electronic-infrared-1HNMR and mass spectral studies.