Ferrocene Based Amido «Ligands»; Synthesis of bimetallic bis(aminopyridinato) titanium complexes

The ferrocene based aminopyridine “ligand” fc(Me2SiApH)2 (3), fc(Me2SiApH)2 = 1,1′‐bis{[(N‐4‐methylpyridin‐2‐yl)amino]dimethylsilyl}ferrocene, has been synthesized by the reaction of 1,1′‐bis(chlorodimethylsilyl)ferrocene (1) with the sodium salt of 4‐methyl‐2‐aminopyridine in hexane. Compound 1 is accessible by the reaction of 1,1′‐dilithioferrocene with a fortyfold excess of Me2SiCl2. The reactions of 3 with one equiv of Ti(NMe2)4 or ClTi(NMe2)3, resp. afford the corresponding bimetallic titanium complexes fc(Me2SiAp)2Ti(NMe2)2 (4) or fc(Me2SiAp)2Ti(NMe2Cl (5)), resp. The crystal structure of 3 is reported.