13C-NMR.-Spektren von Dicyanhydrochinonen und Dicyan-p-benzochinonen

¹³C-NMR. Spectra of Dicyanohydroquinones and Dicyano-p-benzoquinones The ¹³C-NMR. spectra of 12 dicyanohydroquinones and fully substituted dicyano- and diazido-p-benzoquinones have been measured and assigned by comparison with related benzene and p-benzoquinone derivatives. For p-benzoquinones the influence of the cyano and azido substituents on the chemical shift of the CO-, α- and β-C-atoms has been investigated.