A water-soluble multisite ionophore ligand bearing pyridine and aminothiophenol functionality. Synthesis, spectroscopy and electrochemistry of its complexes, and peripheral reactivity of the (E,E)M (M = Ni) complex with Pd2+ and Ag+ |
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Authors: | Mehmet Kandaz Ali Rııza Özkaya Atııf Koca |
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Affiliation: | (1) Department of Chemistry, Sakarya University, 54100, Mithatpaşa, Sakarya, Turkey;(2) Department of Chemistry, Faculty of Science and Letters, Marmara University, 81040 Kadιköy, Istanbul, Turkey;(3) Department of Chemical Engineering, Faculty of Engineering, Marmara University, 81040 Kadιköy, Istanbul, Turkey |
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Abstract: | The design, synthesis and coordination of a novel multisite vic-dioxime compound, LH2, containing flexible pyridine substituents and aminophenylsulfanyl moieties on the periphery, facilitating solubility in water as pyridinium hydrochloride salt are described. LH2 was prepared by the reaction between 2-(2-pyridylethylamino)-benzenethiol and (E,E)-dichloroglydioxime. Mononuclear [(E,E)M] (M=NiII, CuII, CoII, FeII and MnII) and dinuclear uranyl (UO2II) complexes of LH2 were isolated and characterized with metal:ligand ratios of 1:2 and 2:2, respectively. The reaction of Na2PdCl4·3H2O and AgNO3 in DMF with the mononuclear complex, (LH)2Ni, resulted in the formation of the heterotrinuclear complexes [Pd2Ni(LH)2]Cl4 and [Ag2Ni(LH)2](NO3)2. The complexes were characterized by elemental analysis, 1H-n.m.r., u.v.--vis. spectroscopy, i.r., and MS (LSIMS). The redox properties of the complexes were studied by cyclic voltammetry. |
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