“…NMR 1 H (400 MHz, 303 K, DMSO-d 6 ): d H = 8.87 (d, 3 J HH = 4.7 Hz, 2H, H2); 8.12 (m, 2H, H5); 8.06 (dd, 3 J HH = 7.1 Hz, 3 J HH = 6.6 Hz, 2H, H4); 7.63 (dd, 3 J HH = 7.1 Hz, 3 J HH = 4.7 Hz, 2H, H3); 7.06 (d, 3 J HH = 8.5 Hz, 4H, H6), 7.00 (d, 3 N-Methylpyridinium iodide (NMePyI) and N,N,N-trimethylanilinium iodide (TMAI) were synthesized by the interaction of pyridine or aniline with methyl iodide according to the approach described in ref. 31.…”