Six structurally related crown ethers have been studied by electron impact @I) mass spectrometry. From accurate mass measurements, metastabel ion and mass-analyzed ion kinetic energy (MIKE) spectra, plausible fragmentation pathways were deduced. All compounds showed very abundant molecular ions and
Electron impact fragmentation of binuclear crown ethers
β Scribed by A. I. Gren; A. V. Mazepa; O. S. Timofeev
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 169 KB
- Volume
- 28
- Category
- Article
- ISSN
- 1076-5174
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β¦ Synopsis
It is shown that fragmentation under electron impact of binuclear crown ethers is similar to those for crown ethers with the general formula L-crown-n except for the formation of fragment ions with mass numbers reflecting the ring sizes in binuclear crown ether molecules. The formation of these ions occurs with hydrogen atom migrations in C-H.. -0 interactions between atoms from different rings determined in the crystal state.
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