Clusters iron-imide

Lee, S.C. (2002) Iron-imide clusters and nitrogenase Abiological chemistry of biological relevance In Leigh, G. J. and Winterton, N. (eds) Modem Coordination Chemistry Royal Society of Chemistry, Cambridge, pp. 278-287. 

Iron-Imide Clusters and Nitrogenase A biological Chemistry of Biological Relevance ... 

Iron-Imide Clusters and Nitrogenase Abiological Chemistry of Biological Relevancel... 

The synthesis of the imidoiron cubane 4 and the possibility of cluster-bound imide ligands as intermediates during nitrogenase turnover has led us to a general exploration of weak-field iron-imide (Fe-NR) cluster chemistry. Our initial studies establish the existence of a rich reaction manifold that is readily accessible from simple iron(iii) precursors. A recent report from Fenske and co-workers describes additional synthetic routes to Fe-NR clusters,further demonstrating the generality of the chemistry. 

Our preliminary survey of Fe-NR cluster chemistry reveals strong parallels between imide and sulfide ligation on high-spin iron. The dinuclear, trinuclear, and tetranuclear geometries found in imidoiron clusters all have structural counterparts in fundamental biologically-relevant Fe-S cluster motifs (Figure... 

Another recently emerging area of synthesis is that of imidoiron clusters (Fig. 3.18) [103-105]. Lee and coworkers have developed a series of weak field iron clusters supported by imide ligands displaying a wide range of cluster nu-clearities (2—4) and mid- to high-valent iron oxidation states. Of particular inter-... 

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