Novel titanocene derived from a partially alkylated s-indacene: Synthesis, characterization and comparative study with its zirconium analog

A new series of zirconium metallocenes derived from partially alkylated s-indacene with potential applications in the polymerization of ethylene

“…In addition, both protons from carbon 1 appear as two different signals (doublet of doublets at 2.9 and 3.1 ppm). This spectroscopic behavior is completely different from the other mononuclear s-indacene complexes with late transition metals developed in our laboratory [27,[29][30][31][32]38], which present a singlet for both protons 5 and 7 and a broad singlet for protons 1. A possible explanation could rely on the chlorine atoms.…”