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BIBTEX RIS

BINUCLEAR COMPLEXES OF IRON(III) WITH SALICYLATE LIGANDS

1977; Taylor & Francis; Volume: 6; Issue: 4 Linguagem: Inglês

10.1080/00958977708073022

ISSN

1029-0389

Autores

P. G. David, Feeya David,

Tópico(s)

Metal-Catalyzed Oxygenation Mechanisms

Resumo

Abstract Binuclear iron(III) complexes with salicylate ligands, Na2 [Fe2 (C7 H4 O3)4 (H2O)2] and Na4 [Fe2 (C7H4O3)4 (OH)2], crystallize out in the pH range 1–5 and pH 5.5, respectively, from solutions containing iron(III) chloride and a slightly more than two molar proportion of sodium salicylate. Infrared and Mössbauer spectral results and magnetic moment data indicate the presence of non-linear Fe—O—Fe bridge bonds. Evidently two salicylate ligands form bridges between the two iron(III) ions through phenolic oxygen. Mössbauer spectral results indicate the absence of bridging salicylate ligands in solutions of the complex prepared by mixing iron(III) chloride and two to three-fold molar excess of salicylate ions; only mononuclear complexes exist in such solutions.

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