Radical anions of 1,1-azoliumdithiocarboxylates

The 1,1-azoliumdithiocarboxylate cAACMe-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 crow...

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Published inChemical communications (Cambridge, England)
Main Authors Luff, Martin Simon, Oppel, Kai, Krummenacher, Ivo, Braunschweig, Holger, Radius, Udo
Format Journal Article
LanguageEnglish
Published 15.11.2024
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Summary:The 1,1-azoliumdithiocarboxylate cAACMe-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)(cAACMe-CS2)] (2a), [K(18 crown 6)(NHC-CS2)] (NHC = IDipp: 2b, IMes: 2c), and [Mg(DippNacNac)(cAACMe-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.
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ISSN:1359-7345
1364-548X
1364-548X
DOI:10.1039/D4CC05486E