Nitrogen-15 nuclear magnetic resonance spectroscopy. Carbodiimides
- Creators
- Yavari, Issa
- Roberts, John D.
Abstract
High-resolution, 18.25-MHz nitrogen-15 NMR spectra of several carbodiimides (1) have been obtained at the natural-abundance level. The high-field positions of the ^(15)N resonances of these substances are discussed in terms of two different shielding mechanisms. Solvent influences on the ^(15)N and ^(13)C chemical shifts of carbodiimides are small. Both the ^(13)C and ^(15)N spectra of l-ethyl-3-[3-(dimethylamino)propyl]carbodiimidhey drochloride indicate that at least four different structural isomers are present in dimethyl sulfoxide solution at room temperature. Information about the dimerization of carbodiimides in the presence of alkylating agents has been obtained from ^(15)N and ^(13)C NMR.
Additional Information
© 1978 American Chemical Society. Received January 31,1978. December 8, 1978. Supported by the National Science Foundation, and by the Public Health Service, Research Grant No. GM-11073 from the Division of General Medical Sciences.Attached Files
Supplemental Material - jo00419a001_si_001.pdf
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Additional details
- Eprint ID
- 60866
- Resolver ID
- CaltechAUTHORS:20151007-093104289
- NSF
- U.S. Public Health Service (USPHS)
- GM-11073
- 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
- 5729