Synthesis and Characterization of Palladium (II) Complexes with Hydrazo-β-diketone Ligands
Faten Z. Mahmoud1, Fouz M. Omar2, Mohamed M. Mahmoud3, Atef A. T. Ramadan4
1Faten Z. Mahmoud, Department of Chemistry, University College for Girls, Ain Shams University Cairo, Egypt.
2Fouz M. Omar, Department of Chemistry, University College for Girls, Ain Shams University Cairo, Egypt.
3Mohamed M. Mahmoud, Department of Chemistry, Faculty of Education, Ain Shams University, Cairo, Egypt.
4Atef A. T. Ramadan, Department of Chemistry, Faculty of Education, Ain Shams University, Cairo, Egypt.
Manuscript received on March 19, 2014. | Revised Manuscript received on March 20, 2014. | Manuscript published on March 25, 2014. | PP:25-31 | Volume-3 Issue-5, March 2015. | Retrieval Number: C0888013315
Open Access | Ethics and Policies | Cite
© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Phenyl hydrazo-β-diketone ligands were prepared and their complexes with Pd(II) were studied. The β-diketone moieties included acetyl acetone (AA), benzoyl acetone (BA) and dibenzoyl methane (DBM), while the aniline part included 2- mezoxy-, 2-chloro-, 3-nitro-, 3-bromo- and 4-flouro- moieties. The stability constants and protonation constants of Pd(II) complexes and the ligand were studied in 75% (v/v) dioxanewater spectrophotometrically. Solid complexes of Pd(II) where established by elemental analysis, IR spectra, mass spectra and 1H-NMR methods. A linear relationship exists between the chemical shift of hydrazo proton and the protonation constants of the ligand, in addition to the linear relation obtained between the stability constants and the ligand basicties (∑pKH).
Keywords: Hydrazo-β-diketone ligand, potentiometric and spectrophotometric studies of Pd(II)-PHBDH complexes, preparation of solid complex.