本文应用半经验方法来解析无规1,2-聚丁二烯乙烯基叔碳(—CH=)的~(13)C-NMR谱图。研究指出只有主链CH与乙烯基叔碳之间的gauche排列和由此产生的屏蔽效应对后者的化学位移的改变作出了贡献。因此,可以直接利用键概率来归属十个五元组立构异构体的排列顺序。由于上述原因,得到了对于无规1,2-聚丁二烯乙烯基叔碳的~(13)C-NMR谱的一种新的归属,并且通过研究全同和间同1,2-聚丁二烯的~(13)C-NMR谱图予以证明。 In this paper, ~ (13) C-NMR spectra of random 1,2-polybutadiene vinyl tertiary carbon (-CH =) were analyzed by semi-empirical methods. The study indicates that only the gauche alignment between the main chain CH and the vinyl tertiary carbon and the resulting shielding effect contribute to the latter’s chemical shift change. Therefore, the key probabilities can be used directly to assign the order of ten pentad triadomers. For these reasons, a new assignment to the ~ (13) C-NMR spectrum of the random 1,2-polybutadiene vinyl tertiary carbon has been obtained, and by studying the isotactic and 1,2-poly The ~ (13) C-NMR spectrum of dienes was demonstrated.