Ancillary ligand and ketone substituent effects on the rate of ketone insertion into Zr-C bonds of zirconocene-l-Aza-l,3-diene complexes
Zirconocene-l-aza-l,3-diene complexes, [Me2Si(C 5H4)2]Zr[N(Ar)CH=CHCH(Ph)] (Ar = Ph, 2a; Ar = /J-MeOC5H4, 2b) and Cp2Zr[N(Ar)CH=CHCH(Ph)] (Ar = Ph, 3a; Ar = p-MeOC6Hs