Synthesis and spectroscopic characterisation of a new class of heterobimetallic zirconocene(IV) compounds

Reactions of Cp2ZrCl2 with homometallic complexes of aluminium containing one residual hydroxy group Al(OGO)(OGOH) and Al(L)(OGOH) [where G=G1=CMe2CMe2(1a); G=G2=CMe2CH2CHMe (1b); G= G3=CMe2CH2CH2CMe2(1c) and L=L1=OC6H4CH=NCH2CH2O, G=G1(2a); L=L1, G=G2(2b); L=L1, G=G3(2c); L=L2=OC10H6 CH=NCH2CH2O, G=G1(2d); L=L2, G=G2(2e); L=L2, G=G3(2f)] in THF using Et3N as HCl acceptor affords novel heterobimetallic compounds of the types Al(OGO)2Zr(Cl)Cp2 and Al(L)(OGO)Zr(Cl)Cp2, respectively. All of these derivatives have been characterised by elemental analyses, molecular weight measurements, and spectroscopic [IR, NMR (1H and 27Al)] studies