Year: 2025
Type: article
Abstract: Chalcogenide radical cations [R 2 E] •+ (E = S, Se, Te) are commonly short-lived intermediates of fundamental interest. Sulfide radical cations in particular are associated in vivo with oxidative stress and neuropathological processes. Having succeeded in the preparation of meta -terphenyl-based dichalcogenide radical cations [R 2 E 2 ] •+ (E = S, Se, Te), and a telluride analogue [R 2 Te] •+ in the past, we aimed to complete the series regarding sulfur and selenium. Here we report on the single-electron oxidation of diarylchalcogenides M S FluindPhE (E = S, Se, Te; M S Fluind = dispiro[fluorene-9,3’-(1’,1’,7’,7’-tetramethyl- s -hydrindacen-4’-yl)-5’,9”-fluorene]) using XeF 2 in the presence of K[B(C 6 F 5 ) 4 ], which afforded deeply coloured and isolable radical cation salts [M S FluindPhE][B(C 6 F 5 ) 4 ] (E = S, Se, Te). Structural and electronic properties were characterised by electron paramagnetic spectroscopy, cyclic voltammetry, optical absorption spectroscopy and single crystal X-ray diffraction (E = Se, Te), combined with extensive quantum mechanical computations.
Source: Communications Chemistry
Authors: Pascal Komorr, Corina Stoian, Aleksa Radović, Björn A. Meyer, Pim Puylaert, George E. Cutsail III, Emanuel Hupf, Jens Beckmann
Language: English
Subfield: Toxicology
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $3,690
OpenAlex ID: W4413094093