The cation binding of benzo crown ethers in acetonitrile using fluorescence spectroscopy
✍ Scribed by Ayten Göçmen; Çakil Erk
- Publisher
- Springer Netherlands
- Year
- 1996
- Tongue
- English
- Weight
- 311 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0923-0750
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📜 SIMILAR VOLUMES
The complex&ion behavior of crown and lariat ethers with alkali metal ions has been assessed by means of FAB-mass spectrome@ and shown to cm-relate semi-quantitatively with findings obtained in the solution phase.
The addition of stoichiometric vnounts of dibenzo-18-crown-6 ether to soiutions of the sodium ion pairs of pyrazine and therephthalonitrile has been found to reduce dramatically the rate constant for the intramolecular migration of the alkali cation. The proton and nitrogen hyperfine splittings in t
Association constants for the complex Na'/benzo [18]crown-6 in acetonitrile solution were determined from t3C-NMR relaxation time measurements at different temperatures. The dipolar contributions to relaxation were separated by nuclear Overhauser enhancement measurements. The contributions are split