A missing allene of heavy Group 14 elements: 2-germadisilaallene

Area of Science:

• Organometallic Chemistry
• Silicon Chemistry
• Germanium Chemistry

Background:

• Stable silylenes and germylenes are key building blocks in silicon and germanium chemistry.
• Allene structures with silicon and germanium are of interest for their unique bonding and reactivity.

Purpose of the Study:

• To synthesize the first stable 2-germadisilaallene.
• To characterize the structural properties of the synthesized 2-germadisilaallene in the solid state.

Main Methods:

• Reduction of a mixture of a dialkylsilylene and a dichlorogermylene-dioxane complex using KC8.
• Solid-state structural analysis of the synthesized compound.

Main Results:

• Successful synthesis of the first stable 2-germadisilaallene.
• The 2-germadisilaallene displayed dynamic disorder in the solid state.
• Observed disorder is analogous to that found in related trisilaallenes.

Conclusions:

• The synthesis provides a new avenue for creating silicon-germanium compounds.
• The solid-state structure reveals insights into bonding and packing in germadisilaallenes.