## Abstract The structures of the major adduct ions formed in ammonia chemical ionization of thirteen aliphatic and aromatic ketones have been studied by mass analysed ion kinetic energy spectrometry. The [M+NH~3~+H]^+^ ion is shown to have a protonated carbinolamine structure, [M+2NH~3~+H]^+^ to b
Comparative study of ion kinetic energy, chemical ionisation and field desorption spectra
✍ Scribed by K. G. Das; P. S. Kulkarni; M. B. Shinde
- Publisher
- John Wiley and Sons
- Year
- 1975
- Tongue
- English
- Weight
- 274 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1076-5174
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✦ Synopsis
Abstract
A comparison of the fragmentation processes operating in the first field free region was made with the fragmentation in the ion source under electron ionisation, chemical ionisation and field desorption conditions for some selected compounds which undergo retro‐DielsI‐Alder fragmentation in the ion source under electron ionisationconditions. The fragmentation processes which com‐ete with retro‐Diels‐Alder fragmentation under chemical ionisation and field desorption conditions are discussed. The complementary nature of these techniques are illustrated.
📜 SIMILAR VOLUMES
Mass-analysed ion kinetic energy spectrometry (MIKES) with collision-induced dissociation (CID) has been used to study the fragmentation processes of a series of deuterated 2,4,6-trinitrotoluene (TNT) and deuterated 2,4,6trinitrobenzylchloride (TNTCI) derivatives. Typical fragment ions observed in b
## OMS Letters Dear Sir ## Mass -analysed Ion Kinetic Energy and Collisional Activation Spectra of Clusters of Per-O-methylated &D-Xylotriose with Protonated Reagents Formed Under the Conditions of Chemical Ionization electron was 70 eV and the ion source temperature was -180 "C. The model olig