Novel insertion of dimethylsilanone into an Yb–N bond and molecular structure of the insertion product [{Yb(η2-C3N2HMe2-3,5)(µ-η1:η2-OSiMe2C3N2HMe2-3,5)(η-C5H4Me)}2]

Abstract

When [Yb(C₃N₂HMe₂-3,5)(C₅H₄Me)](C₃N₂H₂Me₂-3,5 = 3,5-dimethylpyrazole) is recrystallized by slow diffusion of hexane into a thf solution which contains a small amount of dimethylsilicone grease, it is converted into to the unexpected complex [{Yb(η₂-C₃N₂HMe₂-3,5)(µ-η¹:η²-OSiMe₂C₃N₂HMe₂-3,5)(η-C₅H₄Me)}₂] indicating a novel Me₂SiO insertion reaction.