- 作者: 林孝道 ; 薛公邑 ; 郭悅雄 等
- 作者服務機構: 靜宜大學應用化學系
- 中文摘要: Under El conditions, substituents on N-alkylpyrroles affect fragmentation of the alkyl groups. The electron- withdrawing character of the cyano group retarded formation of an N-methylene cation, and a labile substituent, i.e.,-CHO, -CH/sub 2/COOMe, competed with an N-alkyl group to be an initial fragmentation center. MNDO calculation of the heat of formation of possible fragment ions showed that protonated pyridine is the most stable among the isobaric ions.
- 英文摘要: --
- 中文關鍵字: Electron Impact Mass Spectrometry; Substituted N-Alkylpyrrole; Mndo Calculation; Formation Heat; Fragmentation
- 英文關鍵字: 電子撞擊質譜分析;氮取代烷基咯;MNDO計算法;生成熱;碎裂