Summary
N-salicylidene anthranilamide (H2SAA) and its CrIII, MnII, FeIII, CoII, NiII and CuII complexes were prepared and characterized by physicochemical and spectroscopic data. H2SAA enolizes to give a dibasic ONO donor set in the divalent metal complexes. It also binds to the trivalent metal ions in a nonenolized form using a monobasic ONN donor set. CoII is oxidized to CoIII during complexation. Octahedral geometries are proposed for CrIII, MnII, FeIII and CoIII complexes, while square planar geometries are suggested for the NiII and CuII complexes. Phenoxide bridging in the CrIII and FeIII complexes and enoxide bridging in the NiII and CuII complexes is proposed.
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Rao, V.R., Reddy, K.G., Seshaiah, U.V. et al. Ambidenticity of a tridentate oxygen-nitrogen donor towards bivalent and trivalent transition metal ions. Transition Met Chem 18, 258–261 (1993). https://doi.org/10.1007/BF00207941
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DOI: https://doi.org/10.1007/BF00207941