Bis(diaryliodonium) perfluorosulfonimide zwitterions as potential photo acid generators

Cooperative intermolecular S–Cl⋯O and F⋯F associations in the crystal packing of α,ω-di(sulfonyl chloride) perfluoroalkanes, ClSO2(CF2)nSO2Cl, where n = 4, 6

Halogen bonding between neighboring sulfonyl chloride groups and short fluorine–fluorine contacts supports crystal formation in the title compounds.

Investigation of Iodonium Trifluoroborate Zwitterions as Bifunctional Arene Reagents

The synthesis of a new family of iodonium zwitterions, in which the formal anion is a trifluoroborate moiety, is reported. These reagents present very good stability and have high resistance toward benzyne formation. Their structures were confirmed by X-ray crystallographic analysis and were further investigated using DFT calculations. QTAIM analysis supports an ionic, noncovalent, I⁺···BF₃^- interaction, in accordance with a true zwitterionic nature. Preliminary results of synthetic applications, the arylation of phenolates and trifluoroborate group functionalization, are reported.