Pentacarbonyl-2κ⁵ C-chlorido-1κCl-bis[1(η⁵)-cyclopentadienyl][μ-oxido(phenyl)methylene-1:2κ² O:C]hafnium(IV)tungsten(0)

Abstract

The title compound, [HfW(C 5 H 5 ) 2 (C 7 H 5 O)Cl(CO) 5 ] or [W(CO) 5 (C 7 H 5 O){Hf(C 5 H 5 ) 2 Cl}], contains two metal centres, with a (tungstenpentacarbonyl)oxyphenylcarbene unit coordinated to a hafnocene chloride. The Hf—O—C angle is nearly linear, and the C=O distance is slightly shorter than for equivalent alkoxycarbenes. One of the cyclopentadienyl (Cp) rings undergoes an offset face-to-face π–π interaction [3.495 (7) Å] with the symmetry-related Cp ring of a neighbouring molecule.