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- heterocylic copolyaramide 杂环芳纶
- Heterocylic aromatics such as pyridine and pyrimidines also give a somewhat similar set of bands in the 1600 cm region. 杂环芳香族结构类如吡啶、嘧啶类化合物在1600厘米-1(6.;25微米)区域也有相似的一组谱带。
- The solid ternary complexes of rare earth elements(La,Nd,Gd,Er)with Tiron and nitrogen heterocylic ring have been synthesized in aqueous medium . 在水溶液中,制备了稀土(镧、钕、钆、铒)与钛铁试剂,含氮杂环(吡啶,喹啉,邻菲咯啉)三元固体配合物,通过化学分析及元素分析,确定了配合物的组成。
- Newest Decarboxylation methods are reviewed,including photo, electric decarboxylation, heterocylic nitrogen compounds and transitional metals as catalysts to decarboxylation. 本文综述了关于脱羧反应研究的最新方法，包括光化学、电化学方法及用含氮杂环化合物、过渡金属催化脱羧法。
- The GC/MS analysis proved that the most compounds in the reaction products were low molecular aldehyde,keton,alcohol and sulphur-containing,nitrogen-containing heterocylic compounds. 其中具有肉类特征风味的成分主要是含硫化合物和含氮杂环化合物,而一般性风味成分主要是醛、酮、醇,以及呋喃类化合物。
