Gmelin Handbook of Inorganic and Organometallic Chemistry

The volume begins to close the gap that exists within the "C" series on polynuclear compounds. It describes the trinuclear organoiron compounds containing only ligands of the 1L type, i.e., those carbon ligands bonded to iron through one carbon atom per ligand such as terminal and bridging carbonyls, isocyanides, and various triply bridging arbon groups. Other trinuclear compounds with nL ligands of higher order (n <2)have already been treated in "Organoiron Compounds" C 7, 1985. Volume C 6 a describes a large number of Fe3(Co)n compounds for n = 3 to 9. The great variety of cluster types originates in (a) the existence of noncarbon ligands with Group 16 to 13 elements acting as iron-bridging atoms, (b) many hydrogen-bridged clusters and their corresponding deprotonated anions, and (c) numerous derivatives with donor ligands (2D) replacing one or more terminal carbonyl groups. In addition, there is a large number of compounds containing other transition metals (M) in an Fe3Mn skeleton. Many of the typical cluster structures, determined by X-ray diffraction analyses, are illustrated in this volume. The remainder of the compounds containing Fe3(CO)10 and Fe3(CO)11 units will appear in another volume, C 6b, together with an Empirical Formula Index and Ligand Formula Index common for all trinuclear compounds with 1L ligands.