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Cyclic voltammograms of 1 mM dioxa (1, red), azaoxa (2, purple) and diaza (3, blue) [6]helicenes, recorded in degassed CH3CN solution containing 0.1 M TBAPF6 as supporting electrolyte (ν = 0.1 V.s-1). The potential is scanned first towards positive values and then towards negative ones.
