Summary
An i.r. study of Fe complexes prepared from salicylaldehyde benzoyl hydrazone and seven similar chelating agents allowed the assignment of some iron-ligand bands. The amide I and Φ—O band shifts indicate that the ligand O atoms are directly linked to Fe. The analogy between FeII and FeIII complexes in the mid-i.r. range and the chiefly identical frequencies in the far-i.r. range provide evidence that oxidation of FeIIhas occurred. The bands directly involved in complexation are shifted compared to the free hydrazones, and all are medium or weak.
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Colonna, C., Doucet, JP. & Cossé-Barbi, A. Infrared study of complexes between iron, salicylaldehyde benzoyl hydrazone and seven analogous derivatives. Transition Met Chem 20, 338–343 (1995). https://doi.org/10.1007/BF00139124
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DOI: https://doi.org/10.1007/BF00139124