## Abstract The ^1^H and ^13^C NMR spectra of 1,2βdibromoethaneβ^13^C~2~ have been analyzed to determine the magnitude (38Β·9 Hz) and sign (positive) of ^1^__J__(Cο£ΏC) relative to those of ^3^__J__(Hο£ΏH) (positive). This type of coupling appears to be rather insensitive to the presence of bromine or m
Analysis of the resonance Raman spectra of 13C-and 2H-substituted carotenoids
β Scribed by Hidenori Hayashi; Shigeki Saito; Mitsuo Tasumi
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- English
- Weight
- 427 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0377-0486
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Carbonβ13 n.m.r. spectra have been obtained for some methyl and phenyl substituted 2__H__βazirines. The higher field resonance of Cβ2 than that of the corresponding aziridine carbon is interpreted in terms of ring strain. Substituent effects on the chemical shifts of the azirine ring ca
(1)H and (13)C NMR data for N-substituted morpholines 1-20 were measured using 1D (DEPT, 1D NOE difference) and 2D NMR spectroscopic methods including (1)H-(1)H COSY, long-range (1)H-(1)H COSY, NOESY, gHMBC and gHMQC experiments. At room temperature the (1)H NMR spectra of protonated compounds 2 and
## Abstract The ^1^H and ^13^C NMR spectra of methyl (__E__)β2,3,βdiphenylpropβ2βenoate and methyl (__E__)β2β(2βphenylethenyl) benzoate resulting from the electrocyclic ring opening of benzocyclobutenone starting materials have been assigned. A combination of direct detection 2D NMR techniques, COS