Synthesis and characterization of η6-Cr(CO)3-indenyl-η3-rhodium-η4-C8H12: an η3:η6 co-ordination for the indenyl ligand
Abstract
Deprotonation of indene–tricarbonylchromium with KH in tetrahydrofuran at –40 °C gives the η6-tricarbonylchromium–indenyl anion which reacts with [Rh(CI)COD]2(COD = cyclo-octa-1,5-diene) to form [η6-Cr(CO)3-indenyl-η3-rhodium-η4- COD]; the same bimetallic complex is obtained by reaction of the rhodium dimer with the isomeric η5-indenyl-tricarbonylchromium anion.