A Base‐Stabilized Germylenyl Silaneditelluroate and 1,3‐Diaza‐2‐silaallylgermylene

The trapping of a transient base‐stabilized germylenylsilylene by elemental tellurium and arylazide is described. The reaction of the potassium 2‐imino‐5,6‐methylenedioxylphenylgermylidenide [L iminophenyl GeK] (L iminophenyl = 2‐imino‐5,6‐methylenedioxylphenyl) with the amidinato chlorosilylene [L amidinate SiCl] {L amidinate = PhC(N t Bu) 2 } in THF at –78 °C afforded the transient base‐stabilized germylenylsilylene [L amidinate SiGeL iminophenyl ] ( 3 ). It was unstable in solution, but can be trapped by reacting with elemental tellurium and 2,6‐diisopropylphenylazide ArN 3 (Ar = 2,6‐ i Pr 2 C 6 H 3 ) to form the first base‐stabilized germylenyl silaneditelluroate [L iminophenyl GeTeSi(=Te)L amidinate ] ( 4 ) and 1,3‐diaza‐2‐silaallylgermylene complex [{L amidinate Si(NAr) 2 }GeL iminophenyl ] ( 5 ), respectively. In these reactions, elemental tellurium and ArN 3 insert into the :Si–Ge: bond in 3 , followed by oxidation of the Si center with the substrates to form compounds 4 and 5 , respectively. Compounds 4 and 5 were characterized by X‐ray crystallography.