Co(<scp>ii</scp>), Ni(<scp>ii</scp>), Cu(<scp>ii</scp>) and Cd(<scp>ii</scp>)-thiocarbonohydrazone complexes: spectroscopic, DFT, thermal, and electrical conductivity studies
R. Fouad, Ibrahim A. Shaaban, Tarik E. Ali, M.S. Al-Assiri, S.S. Shenouda
Abstract
O. There is good confirmation between experimental infrared spectral data and theoretical DFT-B3LYP computational outcomes where MCMT acts as a five-membered chelate bonded to the metal ion through azomethine nitrogen and thiocarbonyl sulphur donors. The thermal analysis is studied to confirm the elucidated structure of the complexes. Also, the kinetic and thermodynamic parameters of the thermal decomposition steps were evaluated. The measured optical band gap values of the prepared compounds exhibited semiconducting nature. AC conductivity and dielectric properties of the ligand and its complexes were examined, which showed that Cu(ii) complex has the highest dielectric constant referring to its high polarization and storage ability.