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.