Comparative studies on photo-ionization and electron-impact ionization of peptide derivatives
β Scribed by V. M. Orlov; Ya. M. Varshavsky; A. A. Kiryushkin
- Publisher
- John Wiley and Sons
- Year
- 1972
- Tongue
- English
- Weight
- 492 KB
- Volume
- 6
- Category
- Article
- ISSN
- 1076-5174
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Positive-ion electron ionization (EI), methane chemical ionization (CI) and collision-induced dissociation (CID) mass spectra are reported for a series of pyridone-imines generated from 1-alkyl substituted aminopyridinium salts in a direct-probe inlet. The series comprises 1-methyl-2-imino-and 1-eth
The isomeric 2, 3-, 5, 6-and 8-quinolinylphthalimides give rise to different electron impact ionization mass spectra, which permit easy distinction. The specific fragmentation processes are rationalized in terms of proximity effects and stabilization of cyclic ion structures. Collision-induced disso
The ionization and fragmentation of SF 6 under electron impact has been examined by means of a trochoidal electron velocity selector and a mass spectrometer. The ionization efficiency curves of the positive ions were recorded and the appearance energies of different electronic states of these ions w
## Abstract Fragmentation of the pyridine ring upon Kβshell excitation/ionization has been studied with gaseous 2β, 3β and 4βmethylpyridine by the electronβimpact method. __Ab initio__ molecular orbital (MO) calculations were also carried out to explore electronic states correlating with specific f