Carbon-13 NMR spectra of methyl-substituted 1,4-trans-polybutadienes. 1. Method of assignment and spectra of some homopolymers
✍ Scribed by Sozzani, P.; Di Silvestro, G.; Grassi, M.; Farina, Mario
- Book ID
- 126301805
- Publisher
- American Chemical Society
- Year
- 1984
- Tongue
- English
- Weight
- 935 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0024-9297
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract Carbon‐13 NMR chemical shifts and carbon‐proton coupling constants for nine 4‐substituted and six 5‐substituted pyrimidines are reported. The carbon chemical shifts are correlated with π‐electron densities. Carbon‐proton coupling constants fail to correlate with substituent electronegat
## Abstract The carbon‐13 spectra of some __para__ and __meta__ substituted phenylferrocenes have been analysed. The substituent‐caused shifts are discussed and compared with similarly substituted biphenyls. Correlations with Hammett parameters and with the reactivity parameters of Swain and Lupton
The 13C NMR signals for some 4-substituted phenacyl chlorides and iodides were assigned. The carbonyl carbons exhibit upfield shifts compared with those of the corresponding Csubstituted acetophenones; in the chlorinated derivatives a downfield shift is observed for the cu-methylene carbons, while a
## Abstract The proton and carbon spectra of ten 4‐X‐l‐acetylnaphthalenes have been assigned. Shift correlations have been made with benzene substituent‐induced chemical shifts (SCS, Lynch plots) and with dual substituent parameters (DSP) in the manner successfully done for many series of 1,4‐disub
## Abstract The total assignment of the ^1^H and ^13^C NMR spectra of four fluoro‐substituted chromenes was deduced from the concerted application of homonuclear correlation (COSY), ^1^H‐detected one‐bond heteronuclear multiple quantum coherence (HMQC) and long‐range (two and three bonds) heteronuc