Published July 1, 1979
| public
Journal Article
Halogen complexes of pyridines. A proton and carbon-13 nuclear magnetic resonance study
- Creators
- Schuster, Ingeborg I.
- Roberts, John D.
Abstract
Solutions of iodine and iodine chloride with pyridine, 2,6-dimethylpyridine, and 2,4,6-trimethylpyridine were studied by ^1H and ^(13)C NMR. Support is deduced for the reported formation of three species: the charge-transfer complex B•X-I, the 1:l complex ^+B-I[X_nI_(n-1)^-], and the N-iododipyridinium salt ^+B_2I[X_nI_(n-1)^-]. The ease of formation of each species appears to be a function of pyridine basicity, the Lewis acidity of the halogen (I_2 or ICl), the solvent polarity, and the relative donor-acceptor concentrations. The complexes derived from ɑ-methyl-substituted pyridines can be distinguished by the magnitudes and directions of their ^(13)C "iodination" shifts.
Additional Information
© 1979 American Chemical Society. Received February 12, 1979. Supported by the National Science Foundation and by the Public Health Service, Research Grant No. GM-11072 from the Division of General Medical Sciences.Additional details
- Eprint ID
- 60858
- Resolver ID
- CaltechAUTHORS:20151007-093101598
- NSF
- GM-11072
- U.S. Public Health Service (USPHS)
- Created
-
2015-10-07Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Gates and Crellin Laboratories of Chemistry
- Other Numbering System Identifier
- 5969