## Abstract Deuterium isotope effects on ^13^C chemical shift of tetrabutylammonium salts of Schiff bases, derivatives of amino acids (glycine, L‐alanine, L‐phenylalanine, L‐valine, L‐leucine, L‐isoleucine and L‐methionine) and various ortho‐hydroxyaldehydes in CDCl~3~ have been measured. The resul
Deuterium isotope effects on 13C chemical shifts of lithium salts of Schiff bases amino acids
✍ Scribed by Z. Rozwadowski
- Book ID
- 103837171
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 102 KB
- Volume
- 753
- Category
- Article
- ISSN
- 0022-2860
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✦ Synopsis
The deuterium isotope effects on 13 C chemical shift of Schiff bases lithium salts, derivatives of amino acids (glycine, L-alanine, L-phenylalanine, L-valine, L-leucine, L-isoleucine and L-methionine) and 2-hydroxynaphthaldehyde in D 2 O as well as UV-vis spectra in different solvents have been measured. The results have shown that the lithium salts of the Schiff bases exist in the proton transferred NH form with intramolecular hydrogen bond in water.
📜 SIMILAR VOLUMES
## Abstract The OH chemical shift of the enol form of nitromalonamide is found at 18.9 ppm both in DMSO‐__d__~6~ and in DMF‐__d__~7~ indicating a very strong hydrogen bond. The OH chemical shift is insensitive to temperature changes. Contrary to the large OH chemical shift, a small two‐bond deuteri