637776-07-9

Upstream product

• 637776-04-6 [(2,6-F₂C₆H₃NHCH₂)2C(CH₃)(2-C₅H₄N)] 
• 75-16-1 methylmagnesium bromide 
• 13499-05-3 hafnium tetrachloride 

Downstream Products

• 637776-18-2 ([(2,6-F₂C₆H₃NCH₂)2C(CH₃)(2-C₅H₄N)]HfMe)(B(C₆F₅)4) 

Relevant academic research and scientific papers

Zirconium and Hafnium Complexes that Contain the Electron-Withdrawing Diamido/Donor Ligands [(2,6-X2C6H3NCH 2)2C(2-C5H4N)(CH3)] 2- (X = Cl or F). An Evaluation of the Role of Ortho Halides in 1-Hexene Polymerization

The preparation of zirconium and hafnium complexes containing pyridyldiamine ligands, through Pd catalyzed coupling was discussed. Activation of dimethyl species in bromobenzene led to the formation of dimeric monocations, which are inactive for polymerization of 1-hexene. The results show that the introduction of ortho fluorides and chlorides decreases the rate of polymerization. The introduction also led to the formation of shorter polymer chains and β hydride elimination.