Effect of collision interactions on 13C nuclear magnetic shielding in monosubstituted benzenes in halogen-containing solvents
✍ Scribed by Karol Jackowski
- Publisher
- John Wiley and Sons
- Year
- 1984
- Tongue
- English
- Weight
- 609 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
The 13C nuclear magnetic shielding in benzene and ten monosubstituted benzenes was studied when these compounds were dissolved in cyclohexane, carbon tetrachloride, tetrachloroethylene, methylene bromide and methylene iodide. The results revealed that the observed changes of -C magnetic shielding are dependent on both the solute and solvent molecular properties, although the dependence on the solvent is much more significant. It was also shown that the solvent effects for aromatic carbons are independent of the m electron density distriiution in an aromatic ring. The observed -C deshielding was attriiuted mainly to overlap effects which take place during molecular collisions.