Synthesis and characterisation of Fe6 and Fe12 clusters using bicine |
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| Authors: | Kristoffer Graham Amiera Darwish Alan Ferguson Simon Parsons Mark Murrie |
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| Institution: | 1. WestCHEM, Department of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, UK;2. School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, UK |
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| Abstract: | Reaction of bicine {BicH3, N,N-bis(2-hydroxyethyl)glycine} with an Fe(III) oxo-centered pivalate triangle in MeCN in the presence of Et2NH yields Et2NH2]2Fe6O2(OH)2(Bic)2(O2CCMe3)8], which possesses an S = 5 ground state.Changing the base to NaOMe produces Fe12O4(Bic)4(HBic)4(O2CCMe3)8], which contains two Fe6 units bridged by the carboxylate arms from the bicine ligands. The complex displays strong antiferromagnetic coupling leading to an S = 0 ground state. |
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