Abstract: The carbon-13 NMR of various 5-(α-naphthyl)-tetrazol (Ⅱ), methyl 5-(α-napht-hyl)-2H-tetrazolyl-2-acetate(Ⅲ), 5-(α-naphthyl) -2H-tetrazolyl-2-acetylhydrazine (Ⅳ), l-[5-(α-naphthyl]-2H-tetrazolyl-2-acetyl]-4-phenylthiosemicarbazide(Ⅴ)and 5-[α-naphthyl)-2H-tetrazol-2-ylmethylene]-4-phenyl-l,2,4-triazoline-5-thione(Ⅵ) were studied. The chemical shifts of variuts carbon resonances were assigned on the basis of chemical shift theory, signal intensity, APT techniques and comparison with the chemical shifts of the model compounds.

Key words: Carbon-13 NMR, 1,2,4-trazoline-5-thione