Abstract
A new palladium(II) complex of PdLCl (HL: S-allyl-3-(2-pyridyl-methylene)dithiocarbazate) has been synthesized and characterized by elemental analysis, IR, EI-MS, UV–Vis, 1H NMR, 13C NMR, TGA and SCXRD analysis. IR spectra reveled that the ligand was coordinated to the palladium ion in a tridentate thiolic form manner with NNS donor sites. The molar conductance data revealed that the complex was non-electrolytes. The complex shows square planar geometries around palladium. The dithiocarbazate coordinates as a uninegatively tridentate NNS ligand chelating via the pyridine and azomethine nitrogen atoms and the thiolate sulfur atoms. DFT and TD-DFT calculations on the complex were also carried out by the B3LYP/6-311++G(d,p) level of theory. The results were used to molecular orbital diagram, HOMO–LUMO, NBO, spin-allowed singlet-singlet electronic transitions studies (TD-DFT).
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