An Isolable THF-Coordinated Dialkylgermanone.

Area of Science:

• Organometallic Chemistry
• Main Group Chemistry
• Low-Coordinate Germanium Compounds

Background:

• Dialkylgermanones are transient species, challenging to isolate and study.
• Understanding the reactivity of low-coordinate germanium compounds is crucial for synthetic applications.
• Comparison with analogous silicon compounds provides insights into periodic trends.

Purpose of the Study:

• To generate and characterize a stable dialkylgermanone.
• To investigate the reactivity of the synthesized dialkylgermanone.
• To explore coordination chemistry and synthetic transformations of dialkylgermanone.

Main Methods:

• Reaction of a solid dialkylgermylene with gaseous dinitrogen monoxide (N₂O).
• Isolation of the dialkylgermanone as a tetrahydrofuran (THF) adduct.
• Spectroscopic characterization and reactivity studies with various reagents (H₂O, THF, B(C₆F₅)₃, Ph₃P, Ph₃PCHPh).

Main Results:

• Successful generation of a stable dialkylgermanone.
• Formation of an isolable THF-coordinated dialkylgermanone.
• Demonstration of reactivity analogous to base-free dialkylsilanones, including deoxygenation and a germa-Wittig reaction.

Conclusions:

• Stable dialkylgermanones can be accessed via reaction with N₂O.
• Coordination with THF stabilizes the germanone, enabling isolation and study.
• The reactivity profile highlights the synthetic potential of low-coordinate germanium compounds.