Synthesis and characterization of η5-cyclopentadienyl-silylallyl niobium and tantalum complexes

The synthesis and characterization of new monocyclopentadienyl, imido-mono- and di-cyclopentadienyl niobium and tantalum(V) and dicyclopentadienyl metal(IV) complexes with the allylsilyl-substituted cyclopentadienyl ligand are described.