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. 2021 Oct 11;60(42):22706-22710.
doi: 10.1002/anie.202108498. Epub 2021 Sep 12.

Carbene-Stabilized Dithiolene (L0 ) Zwitterions

Yuzhong Wang  1 , Phuong M Tran  1 , Yaoming Xie  1 , Pingrong Wei  1 , John N Glushka  1 , Henry F Schaefer 3rd  1 , Gregory H Robinson  1
Affiliations

Carbene-Stabilized Dithiolene (L0 ) Zwitterions

Yuzhong Wang et al. Angew Chem Int Ed Engl. .

Abstract

A series of reactions between Lewis bases and an imidazole-based dithione dimer (1) has been investigated. Both cyclic(alkyl)(amino)carbene (CAAC) (2) and N-heterocyclic carbene (NHC) (4), in addition to N-heterocyclic silylene (NHSi) (6), demonstrate the capability to cleave the sulphur-sulphur bonds in 1, giving carbene-stabilized dithiolene (L0 ) zwitterions (3 and 5) and a spirocyclic silicon-dithiolene compound (7), respectively. The bonding nature of 3, 5, and 7 are probed by both experimental and theoretical methods.

Keywords: carbenes; dithiolenes; silicon; silylenes; sulphur.

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References

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