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Related Experiment Video

Updated: Dec 23, 2025

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals

Published on: April 19, 2019

A silicon-carbonyl complex stable at room temperature.

Chelladurai Ganesamoorthy¹, Juliane Schoening¹, Christoph Wölper¹

¹Institute for Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (Cenide), University of Duisburg-Essen, Essen, Germany.

Nature Chemistry

|April 22, 2020

Summary

Researchers synthesized a stable silylene carbonyl complex, bridging main-group and transition metal chemistry. This breakthrough enables small molecule activation and mimics transition metal reactivity, opening new avenues in catalysis.

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Preparation of Carbon Nanosheets at Room Temperature

Preparation of Carbon Nanosheets at Room Temperature

Published on: March 8, 2016

Area of Science:

Main-group element chemistry
Organometallic chemistry
Catalysis

Background:

Main-group compounds with specific orbital energies can mimic transition metal reactivity.
Silylenes are promising candidates for such mimicry, but direct carbonylation is rare.
Transition metal carbonyl complexes are common, but analogous main-group compounds are virtually unknown.

Purpose of the Study:

To synthesize and characterize a room-temperature stable silylene carbonyl complex.
To investigate the reactivity of this novel main-group carbonyl complex.
To explore the potential of main-group elements in mimicking transition metal chemistry.

Main Methods:

Synthesis of an electron-rich silylene intermediate.
Direct carbonylation of the silylene intermediate.
Single-crystal X-ray structure determination.
Density functional theory (DFT) computations.

Main Results:

A room-temperature stable silylene carbonyl complex, [L(Br)Ga]2Si:-CO, was successfully synthesized.
The complex exhibits reactivity towards H2 and PBr3, demonstrating bond activation.
The complex undergoes CO substitution reactions with isocyanides.

Conclusions:

This study reports the first room-temperature stable main-group silylene carbonyl complex.
The synthesized complex mimics reactivity patterns of transition metal carbonyls.
This work expands the scope of main-group element chemistry in small molecule activation and catalysis.