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Synthesis and spectral investigations of mononuclear [N6], [N8] and dinuclear [N10] complexes of polyamide macrocycles: 57Fe Mössbauer parameters of Fe(III) complexes
- Source :
-
Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy . Apr2009, Vol. 72 Issue 3, p616-620. 5p. - Publication Year :
- 2009
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Abstract
- Abstract: New stable Fe(III) complexes of tetraamide [N6], [N8] and [N10] macrocyclic ligands are reported. One of them, [N10] is dinucleating, with two Fe(III) nuclei in the macrocyclic cavities. The structural features have been discussed on the basis of analytical, ESI mass, FT-IR, electronic, 1H and 13C NMR spectral studies. Magnetic moment studies indicate presence of anti-ferromagnetically coupled (Fe3+–Fe3+ =S5/2–S5/2) spin–spin interactions in the dinuclear [N10] complex. 57Fe Mössbauer measurements confirm Fe(±3/2→±1/2) nuclear transitions supporting high–spin configuration of Fe(III) nuclei with the presence of Kramer''s double degeneracy. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 13861425
- Volume :
- 72
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy
- Publication Type :
- Academic Journal
- Accession number :
- 36195813
- Full Text :
- https://doi.org/10.1016/j.saa.2008.10.053