Carbene-Stabilized Dithiolene (L 0 ) Zwitterions.

Authors :: Wang Y
Tran PM
Xie Y
Wei P
Glushka JN
Schaefer HF 3rd
Robinson GH
Source :: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2021 Oct 11; Vol. 60 (42), pp. 22706-22710. Date of Electronic Publication: 2021 Sep 12.
Publication Year :: 2021
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 (L <superscript>0</superscript> ) 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.<br /> (© 2021 Wiley-VCH GmbH.)