Transition metal complexes with tridentate salicylaldimine derived from 3,5-di-t-butylsalicylaldehyde |
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Authors: | Ta? E?ref Kasumov Veli T ?ahin Ömer Özdemir Mustafa |
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Institution: | (1) Department of Chemistry, Harran University, Sanliurfa, Turkey |
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Abstract: | Several new binuclear CuII, NiII, OVIV and MnII complexes of tridentate salicylaldimine (H2L), obtained from 3,5-di-t-butylsalicylaldehyde and o-aminophenol, have been prepared and characterized by analytical, spectroscopic (i.r., u.v.–vis., e.s.r.) techniques, magnetic and thermal measurements. The adduct formation or dissociation of these complexes in the presence of strongly coordinating solvents like pyridine and DMSO did not take place. The complexation of CoII with H2L is accompanied by intramolecular electron transfer from the metal to the coordinated ligand yielding the radical ligand CoIII complex (g = 2.003, A
Co = 10 G). The e.s.r. spectra of the CuII, OVIV and MnII complexes in the solid state and in solution are very broad due to intramolecular dipolar antiferromagnetic interactions. |
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