Preparation, luminescence studies, and solution behaviour of a cerium–tungsten heterobimetallic compound

Abstract

The crystal structure determination of cerium–tungsten compound (2)[Cp″₂Ce-(µ-OC)W(CO)(Cp)(µ-CO)]₂[Cp″= C₅H₃(SiMe₃)₂, Cp = C₅H₅] shows it to consist of a 12-membered ring in which Ce and W centres are linked by Σ-carbonyls; intact (2) is virtually non-emissive (presumably due to cerium–tungsten excited state energy transfer), but in acetonitrile solvent it serves as a source of the luminescent cerium cation [Cp″₂Ce(NCMe)_x]⁺.