Issue 12, 2024

Tetryliumylidene ions in synthesis and catalysis

Abstract

Tetryliumylidene ions ([R–E:]+), recognised for their intriguing electronic properties, have attracted considerable interest. These positively charged species, with two vacant p-orbitals and a lone pair at the E(II) centre (E = Si, Ge, Sn, Pb), can be viewed as the combination of tetrylenes (R2E:) and tetrylium ions ([R3E]+), which makes them potent Lewis ambiphiles. Such electronic features highlight the potential of tetryliumylidenes for single-site small molecule activation and transition metal-free catalysis. The effective utilisation of the electrophilicity and nucleophilicity of tetryliumylidenes is expected to stem from appropriate ligand choice. For most of the isolated tetryliumylidenes, electron donor- and/or kinetic stabilisation is necessary. This minireview highlights the developments in tetryliumylidene syntheses and the progress of research towards their reactivity and applications in catalytic reactions.

Graphical abstract: Tetryliumylidene ions in synthesis and catalysis

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Article information

Article type
Review Article
Submitted
01 Dec 2023
Accepted
18 Jan 2024
First published
20 Jan 2024
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2024,15, 4275-4291

Tetryliumylidene ions in synthesis and catalysis

S. Stigler, S. Fujimori, A. Kostenko and S. Inoue, Chem. Sci., 2024, 15, 4275 DOI: 10.1039/D3SC06452B

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