Journal
INORGANICA CHIMICA ACTA
Volume 353, Issue -, Pages 292-300Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0020-1693(03)00222-6
Keywords
ferrocene; structures; Schiff base
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The potential use of (aminomethyl)ferrocene and 1,1'-di(aminomethyl)ferrocene as precursor for Schiff base chemistry has been tested. (Aminomethyl)ferrocene reacts with 3,3'-(3-oxapentane-1,5-diyldioxy)bis(2-hydroxybenzaldehyde) to give the [2+1] diiminic ligand 8. 8 reacts with LaCl3 and Ni(CH3COO)(2) giving the corresponding complexes 9 and 10. 1,1'-Di(aminomethyl)ferrocene was prepared by conversion of 1,1'-di(formyl)ferrocene into 1,1'-di(formyl)ferrocene oxime, followed by reduction of the oxime with LiAlH4. Easy degradation of 1,1'-di(aminomethyl)ferrocene prevented its use as aminic precursor for the synthesis of Schiff base ligands. Isomerization occurred about the carbon-nitrogen double bonds of 1,1'-di(formyl)ferrocene oxime giving rise to three isomers. The X-ray analysis has shown that in the 5a complex three independent molecules having different conformation are present. (C) 2003 Elsevier B.V. All rights reserved.
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