Signals of Isotopomers in 13C NMR Spectra of Polyisoprene Rubbers
| Autor: | N. Makhiyanov |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
010401 analytical chemistry 02 engineering and technology Carbon-13 NMR 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Spectral line 0104 chemical sciences Isotopomers chemistry.chemical_compound Coupling (physics) chemistry Isotopes of carbon Physical chemistry Condensed Matter::Strongly Correlated Electrons 0210 nano-technology Spectroscopy Isoprene |
| Zdroj: | Journal of Applied Spectroscopy. 85:1037-1043 |
| ISSN: | 1573-8647 0021-9037 |
| Popis: | Analysis of 13C-satellites was carried out in the 13C NMR spectra of isoprene rubbers with a natural content of 13C carbon isotope. 13C-satellites are the signals caused by the one-bond spin–spin coupling of 13C nuclei. The spin–spin coupling 1J(13C–13C) constants, as well as the magnitude of the effect of the isotopic substitution 1Δδ13C(13/12C), were measured under magnetic shielding of 13C nuclei. The results indicate that the configurational and local conformational structure of natural and synthetic isoprene rubbers is identical. |
| Databáze: | OpenAIRE |
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