Table 1 NMR data of poly(cis-1,4-isoprene) from T. koksaghyz.
From: Characterization of rubber particles and rubber chain elongation in Taraxacum koksaghyz
| Â | Chemical shifts* | Observed correlations in | Published 13 C-NMR chemical shifts** | |||
|---|---|---|---|---|---|---|
Position | 1H [ppm] | 13C [ppm] | COSY | HMBC | cis -Polyisoprene | trans -Polyisoprene |
1 | 2.1 | 27.0 | 2 | 4 | 26.3 | 26.4 |
2 | 5.2 | 124.0 | 1, 5(w)*** | 5, 1, 4 | 124.8 | 123.9 |
3 | Â | 134.2 | Â | 1, 5 | 134.8 | 134.5 |
4 | 2.1 | 31.4 | Â | 5, 1 | 31.8 | 39.3 |
5 | 1.7 | 22.3 | 1(w) | 4 | 22.9 | 15.3 |