Utilization of crown ethers to stabilize the dinuclear μ-oxo bridged iron(iii) aqua ion, [(H2O)5Fe(μ-O)Fe(OH2)5]4+
- 21 February 2002
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 6,p. 1024-1029
- https://doi.org/10.1039/b105691n
Abstract
Using a supramolecular approach a class of compounds containing the [(H2O)5Fe–O–Fe(H2O)5]4+ core, viz. [(H2O)5Fe–O–Fe(OH2)5](NO3)4·(18-crown-6)2, (1), [(H2O)5Fe–O–Fe(OH2)5](ClO4)4·(18-crown-6)2·2H2O (2) and [(H2O)5Fe–O–Fe(OH2)5](NO3)10[Fe(OH2)6]2(15-crown-5)4·(H2O)6, (3), has been prepared and characterized. These three complexes were characterized by electronic, infrared, Raman and Mössbauer spectroscopy, X-ray crystallography and magnetic susceptibility. The X-ray structures reveal the crown ethers, anions and the [(H2O)5Fe–O–Fe(H2O)5]4+ cores are all involved in extensive hydrogen bonding, thus stabilizing the unprecedented (in the solid state) dimeric cores. Magnetic susceptibility measurements show a strong antiferromagnetic coupling in each complex that is consistent with current radial and angular overlap descriptions of exchange coupling in mono-oxo bridged dinuclear Fe(III) complexes.Keywords
This publication has 47 references indexed in Scilit:
- Polyiron oxides, oxyhydroxides and hydroxides as models for biomineralisation processesPublished by Springer Nature ,1997
- Synthetic Models for Iron–Oxygen Aggregation and BiomineralizationAngewandte Chemie International Edition in English, 1992
- Oxo- and hydroxo-bridged diiron complexes: a chemical perspective on a biological unitChemical Reviews, 1990
- Review of the hydrolysis of iron(III) and the crystallization of amorphous iron(III) hydroxide hydrateJournal of Chemical Technology & Biotechnology, 1989
- Hydrolysis of Iron(III)…Chaotic Olation Versus NucleationComments on Inorganic Chemistry, 1984
- Hydrolytic polymerization of chromium(III). 1. Two dimeric speciesInorganic Chemistry, 1981
- The Characterization of [Cr(H2O)4OH]2+4 and Its Formation by Oxygen Oxidation of Chromous SolutionsInorganic Chemistry, 1964
- CRYOSCOPIC DETERMINATION OF MOLECULAR WEIGHTS IN AQUEOUS PERCHLORIC ACIDThe Journal of Physical Chemistry, 1961
- The Formation of a Dinuclear Cr(III) Species by Oxidation of Chromous Solutions1Journal of the American Chemical Society, 1959
- 410. The oxidation of chromous perchlorate solutions by molecular oxygenJournal of the Chemical Society, 1956