## Abstract An analysis of the ^1^H and ^13^C spectra of 1βazafluorene has been carried out using computer calculations and homoβ and heteronuclear double resonance techniques. The ^4^__J__, ^5^__J__ and ^6^__J__ longβrange coupling constants of the 9βCH~2~ group protons with the protons of the pyr
High-Resolution 13C and 1H Solution NMR Study of Poly(lactide)
β Scribed by Kean, Robert T.; Hall, Eric S.; Kolstad, Jeffrey J.; Lindgren, Tim A.; Doscotch, Matthew A.; Siepmann, J. Ilja; Munson, Eric J.; Thakur, Khalid A. M.
- Book ID
- 111682148
- Publisher
- American Chemical Society
- Year
- 1997
- Tongue
- English
- Weight
- 156 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0024-9297
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π SIMILAR VOLUMES
Ureido sugars with eight various alkyl groups at N-3 were studied by means of ~H, ~3C, and 15N NMR spectroscopy in CDC13 solution and a 13C CP MAS technique in the solid state. The analysis of chemical shifts and coupling constants suggests the Z,Z-anti conformation of the ureido part of molecule. D
o-Benzenediazonium carboxylates couple with methylene-active compounds to yield hydrazo derivatives with high purity. The 'H and 13C NMR data of eleven such products are presented and analysed. The predominance of the hydrazo over the azo form is consistent with accepted criteria. Furthermore, evide