Mono-η-cyclopentadienyl-benzamidinato compounds of titanium, zirconium and hafnium

Abstract

The new compounds [M(η-C₅R₅){η-R′NC(Ph)NR′}Cl₂][where R′= Me₃,Si (TMS), and R = H, M = Ti,Zr, Hf or R = Me, M = Ti or Zr], [Zr(η-C₅R₅){(η-R′NC(Ph)NR′}(CH₂Ph)Cl](R = H, Me), and [Zr(η-C₅R₅){η-R′NC(Ph)NR}(CH₂Ph)₂](R = H, Me) are described; the compound [Zr(η-C₅H₅){η-R′C(Ph)R′}Cl₂] acts as a cocatalyst for the polymerisation of ethylene and propene.