Fulvalene titanium and zirconium complexes: synthesis and NMR study of phosphanido-, alkyl-, and alkynyl-derivatives. X-ray crystal structures of [Ti(η5−C5H5)(μ−PPH2)2μ−(η5−C5H4−η5−C5H4)] and [Zr(η5−C5H5)(μ−C≡CSiMe3)2μ−(η5−C5H4−η5−C5H4)] | Publicación