Carbonyltungsten(0) complexes of acryloylferrocene: Synthesis and characterization

Photolysis of W(CO)6 or W(CO)5[P(OCH3)3] in the presence of acryloylferrocene in n-hexane solution yields pentacarbonyl(η2-acryloylferrocene)tungsten(0) or cis-W(CO)4[P(OCH3)3](η2-acryloylferrocene), respectively, as the only photo-substitution product. Both η2-acryloylferrocene complexes could be isolated and characterized by MS, IR and NMR spectroscopy. Both complexes are found to be labile in solution towards decomposition to the parent carbonyltungsten(0) and free acryloylferrocene.