硒芳香杂环化合物的GC/MS分析

GC/MS Analysis of Heterocyclic Aromatic Selenium Compounds

本文对合成的7种含硒芳香杂环化合物进行了GC/MS分析研究。结果表明:BS、MB、BBS和DBBS等4个化合物在色谱柱内的保留时间与它们的相对分子质量呈线性关系。所有化合物均可获得特征质谱,表现出含单个硒原子的分子离子或碎片离子特征峰簇,硒的两种主要同位素在峰簇中表现为主要峰M与(M-2)的相对丰度比约为2∶1,可为鉴定含硒分子离子或碎片离子提供重要信息。新化合物1,2,5-硒二唑并[3,4-d]嘧啶-5,7-(4H,6H)二酮(SPDO)在色谱柱内出现11.83min和7.96min两个具有相同的质谱的色谱峰,被认为是互变异构体的峰。

Seven freshly prepared heterocyclic aromatic selenium compounds were investigated by GC/MS. The GC results showed that the mixture of BS, MB, BBS and DBBS could be separated and their retention times were linear to their relative molecular mass. The MS showed that the ratio of relative abundance ratio of two main Se isotopes is about 2：1, which can give important information for identifying molecular or fragile ions of selenium. For the new compound of 1,2,5-selenadiazolo [3,4-d] pyrimidine-5,7-（4H,6H） dione （SPDO）,two peaks with the same mass spectra could be observed in the GC separation,which were considered to be its two isomers.