1H NMR spectra in CD3CN of a) 3(F), b) 4(F), c) 1(PF6), d) 1(PF6) after it was treated with TMAF in CH3CN, desalted with benzene, and dissolved in CD3CN, and e) a mixture of 3(F) and 4(F) in CD3CN. Only the aromatic regions are displayed for clarity.