CC Coupling and CH Bond Activation—Unexpected Pathways in the Reactions of [Yb(η5‐C13H9)2(thf)2] with Diazadienes

A couple of surprises: The reactions of [(C13H9)2Yb(thf)2] with diazadienes (2,6-iPr2C6H3)NCRCRN(2,6-iPr2C6H3) (R=H, Me) result in unexpected YbII complexes, which arise either from the coupling of the fluorene and the diazadiene ligands (when R=H, see picture) or from CH bond activation of the diazadiene ligand (when R=Me).