Total assignment of the proton NMR spectrum of dinaphtho[1,2-B:2′,3′-d]thiophene

Recently, there has been some question regarding the ¹H-nmr spectrum of dinaphtho1,2-b-2′,3′-d]-thiophene. A recent study has reported differences in some of the proton resonance positions from results of earlier work. We report the total assignment of the ¹H-nmr spectrum of the title compound using a combination of ¹H-COSY and one dimensional NOE-difference spectroscopy (NOEDS).