Synthesis and electrochemistry of niobium complexes incorporating asymmetrically substituted ansa-ligands

Synthesis and Reactivity of Alkylzirconium Complexes Incorporating Asymmetrically Substituted ansa Ligands − X‐ray Crystal Structure of [Zr{Me2Si(η5‐C5Me4)(η5‐C5H3Me)}(CH2Ph)Cl]

“…In methylsubstituted zirconocene dihalide complexes [Zr(η 5 ‐C 5 H 5− n Me n ) 2 Cl 2 ] ( n = 0−5) such trends were observed in shifts of electrochemical reduction potentials 8. We have observed the same effect in our recently presented study on the electrochemistry of niobium( IV ) dichloride complexes which contain the same ansa ligands as those discussed presently in this paper 9…”

“…[8] We have observed the same effect in our recently presented study on the electrochemistry of niobium() dichloride complexes which contain the same ansa ligands as those discussed presently in this paper. [9] Alkylzirconocene cations are currently of interest due to their role as single-site ZieglerϪNatta olefin polymerization catalysis. [10] Common precursors to these cationic catalysts include dimethyl-and dibenzylzirconocenes which are stable species.…”

Catalysis and Organometallic Chemistry of Monometallic Species

“…The application of group 5 metal complexes to alkene polymerisation includes the synthesis and electrochemistry of niobium() unsymmetric ansa-bridged niobacene complexes, 92 and tantalum() metallocene, half metallocene and non-metallocene complexes derived from hybrid Cp-amido and di-amido ligands for the copolymerisation of ethene and 1-octene and polymerisation of methylmethacrylate. 93 Vanadocene complexes containing amino functionalised Cp ligands have also been investigated for the polymerisation of butadiene.…”

Catalysis and Organometallic Chemistry of Monometallic Species

“…The application of group 5 metal complexes to alkene polymerisation includes the synthesis and electrochemistry of niobium() unsymmetric ansa-bridged niobacene complexes, 92 and tantalum() metallocene, half metallocene and non-metallocene complexes derived from hybrid Cp-amido and di-amido ligands for the copolymerisation of ethene and 1-octene and polymerisation of methylmethacrylate. Hydrogenation of aromatics 104 and intramolecular hydride transfers to aromatic rings have been studied and an investigation into dihydrogen addition to [Ta(CH 2 )-(η 5 -C 5 Me 5 ) 2 (H)] using parahydrogen has also been reported.…”