Doubly silyl-bridged cyclopentadienyl anion (L2–), chromium(II) chloride and cyclopentadienyl anion (Cp–) react to give the dinuclear chromocene CpCrLCrCp with a metal–metal distance of 5.831(1)Å(X-ray determination) that has magnetically probably isolated chromocene moieties (NMR, magnetic susceptibility) but which show interactions in cyclic voltammetry.
H. Atzkern, J. Hiermeier, B. Kanellakopulos, F. H. Köhler, G. Müller and O. Steigelmann, J. Chem. Soc., Chem. Commun., 1991, 997 DOI: 10.1039/C39910000997
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