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Updated: Jan 6, 2026
08:15
Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups
Published on: February 11, 2012
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An isolable germa-isonitrile featuring a terminal nitrogen-germanium triple bond
Zixu Wang1, Chengxiang Ding2, Yizhen Chen1
1Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, China.
Nature Chemistry
|November 25, 2025
Summary
Researchers synthesized and characterized a stable germa-isonitrile, a heavier analogue of isonitriles. This novel compound, featuring a terminal germanium-nitrogen triple bond, opens new avenues in synthetic chemistry due to its versatile reactivity.
Area of Science:
- Organometallic Chemistry
- Main Group Chemistry
- Synthetic Chemistry
Background:
- Isonitriles (R-N≡C) are established functional molecules.
- Heavier group 14 analogues (tetrela-isonitriles, R-N≡E) are highly reactive and challenging to study.
- Previous characterization relied on cryogenic or gas-phase spectroscopy.
Purpose of the Study:
- To synthesize and characterize a stable germa-isonitrile (Ar-N≡Ge).
- To investigate the structural and electronic properties of the terminal N≡Ge triple bond.
- To explore the reactivity of the germa-isonitrile.
Main Methods:
- Synthesis of a bulky aryl-stabilized germa-isonitrile.
- X-ray crystallography for structural determination.
- Solid-state ¹⁵N nuclear magnetic resonance (NMR) spectroscopy.
- Computational studies.
Main Results:
- Successful synthesis and characterization of a germa-isonitrile (Ar-N≡Ge).
- Determination of a short Ge-N bond length (1.6395(19) Å) indicative of a triple bond.
- Characterization confirmed the terminal N≡Ge moiety.
- Demonstrated versatile reactivity towards organic substrates and transition metal precursors.
Conclusions:
- A stable germa-isonitrile has been synthesized and characterized.
- The germa-isonitrile possesses a highly polarized terminal N≡Ge triple bond.
- This compound shows significant potential for applications in synthetic chemistry.
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