Synthesis, Structure, and Reactivity of Aryloxo(imido)titanium Complexes

Abstract

The η2-iminotitanium complex 1 reacts with azobenzene in the presence of pyrrolidinopyridine py′ with ligand exchange to give the complex 2, which transforms within several days at 100 °C into the phenylimidotitanium complex 3. The length of the Ti-N bond in 3 is 171.9(3) pm, and the Ti-N-C angle is 173.1(3)°. Unlike imidozirconium compounds, which readily react with C-H activation, 3 is a “dead dog”—no reaction in benzene at 110°C! Ar′= 2,6-iPr2C6H3, R1 = tBu.