Figure 4
(a) C—Se⋯O chalcogen bonding in 1,3-bis(benzimidazoliumyl)benzene-based chalcogen-bonding catalysts (Steinke et al., 2023). (b) C—Se⋯N and C—Se⋯O chalcogen bonding in ebselen analogues, shown with critical points in electron density (Xu et al., 2023). (c) N—Ch⋯N and N—Ch⋯O chalcogen bonding in 3,4-dicyano-1,2,5-chalcogenodiazole cocrystals studied by solid-state NMR spectroscopy (Nag et al., 2022). All figures are reproduced from the cited references with permission. |