Reversible carbonylation of dialkylbiscyclopentadienylzirconium(IV): synthesis and structure of π-acyl derivatives of zirconium and X-ray structure of biscyclopentadienyl(π-acetyl)methylzirconium

Abstract

Dimethyl- and dibenzyl-biscyclopentadienylzirconium(IV) react reversibly with carbon monoxide at atmospheric pressure giving the corresponding stable alkyl-acyl derivatives; the X-ray structure of the methyl derivatives shows the acyl group acting as a three-electron donor ligand.