Related Experiment Video
Updated: Jan 28, 2026

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
Published on: August 17, 2017
NHC-Stabilised Silyliumylidene Ions.
Samuel L Powley1, Shigeyoshi Inoue1
1Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, 85748, Garching bei München, Germany.
Donor-stabilised silyliumylidene ions, a class of low-valent silicon compounds, are gaining research attention. This account reviews their history and highlights recent group advancements in their reactivity and synthesis.
Area of Science:
- Organosilicon Chemistry
- Low-valent Silicon Species
- Carbene Analogues
Background:
- Silyliumylidene ions ([R-Si:]+) are low-valent silicon compounds.
- Research interest has grown significantly in recent years.
- Initial focus was on synthesis and characterization.
Purpose of the Study:
- To provide a historical overview of silyliumylidene ion research.
- To detail the group's contributions to silyliumylidene chemistry over four years.
- To explore the reactivity of stable N-heterocyclic carbene (NHC)-stabilized silyliumylidenes.
Main Methods:
- Review of historical literature.
- Discussion of published experimental work.
- Focus on NHC-stabilized silyliumylidene synthesis and reactivity.
Main Results:
- Stable NHC-stabilized silyliumylidenes have been synthesized.
- These compounds exhibit interesting reactivity patterns.
- Advancements in the field have expanded the scope of low-valent silicon chemistry.
Conclusions:
- Silyliumylidene chemistry is a rapidly developing field.
- The group's work has contributed to understanding silyliumylidene reactivity.
- Further exploration of low-valent silicon species is warranted.
Related Concept Videos
Common Ion Effect
Precipitation of Ions
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
Ion Channels
Ion channels are specialized integral membrane proteins on the plasma membrane that allow...
Formation of Complex Ions
Ions and Ionic Charges
Ions as Acids and Bases
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:

