In present work set of eight Schiff bases derived from substituted salicylaldehydes and aliphatic and aromatic amines has been studied in the solid state by 15 N and 13 C CPMAS NMR methods. 15 N CPMAS NMR measurement is especially useful for investigation of the tautomerism in the compounds consider
A solution and solid state 15N NMR study of hydrogen bonding in a Schiffs base
✍ Scribed by J. Sitkowski; L. Stefaniak; I. Wawer; L. Kaczmarek; G.A. Webb
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 153 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0926-2040
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✦ Synopsis
The 15N results reveal a difference in the extent of intramolecular hydrogen bond formation exhibited by the Schiffs base, compound 2, in solution and the solid state. Comparison of the 15N shielding changes observed, with those arising from protonation, provides the basis for a quantitative estimate of the strength of the hydrogen bonds formed.
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