Just Published in Chemical Communications

Authors: M. S. Luff, K. Oppel, I. Krummenacher, H. Braunschweig and U. Radius

Abstract: The 1,1-azoliumdithiocarboxylate cAAC^Me-CS₂ (1a) was prepared and its redox chemistry was evaluated and compared to NHC based dithiocarboxylates IDipp-CS₂ (1b) and IMes-CS₂ (1c). Radical anions [carbene-CS₂]˙⁻ were prepared by metallic reduction as the potassium or magnesium ion complexes [K(18-crown-6)(cAAC^Me-CS₂)] (2a), [K(18-crown-6)(NHC-CS₂)] (NHC = IDipp: 2b, IMes: 2c), and [Mg(^DippNacNac)(cAAC^Me-CS₂)] (3) and extensively characterized (SC-XRD, EPR, UV/VIS/NIR, DFT). These complexes represent the first examples of isolated radical anions of 1,1-dithiolenes.

Link: https://pubs.rsc.org/en/content/articlelanding/2024/cc/d4cc05486e