Halide and Tertiary Phosphine Derivatives of the Tungsten(IV) η2-Acetyl Complex CpW(NCMe)3(η2-COMe)(2+). Reversible Ag(1+)-Assisted Opening of an η2-Acetyl Group?

Article abstract of DOI:10.1021/ic00116a010

The dicationic W(IV) η2-acetyl complex CpW(NCMe)3(η2-COMe)(2+) (1) serves as the precursor for new tungsten(IV) η2-acetyl derivatives. Treatment of 1 with halides provided trans-CpW(NCMe)2(X)(η2-COMe)(1+) (X = Cl, Br, I) in high yields. The reaction betwe