A comprehensive I3C-NMR method for the analysis of composition in the most common commercial polyethylene copolymers has been established. The method covers ethene copolymers with propene, butene-1, hexene-1, octene-1, and 4-methyl pentene-1 in the composition range of 1-10 mol %. The chemical shift
β¦ LIBER β¦
Determination of the most stable conformers of branched alkanes by 13C-NMR spectroscopy at very low temperatures
β Scribed by W. Ritter; W. Hull; H.-J. Cantow
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- French
- Weight
- 267 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0040-4039
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## Abstract Utilizing 2D NMR spectroscopy (COSY, NOESY, TOCSY, inverse detected ^1^H/^13^C correlation spectroscopy), the ^1^H and ^13^C NMR spectra of the ketone and epoxide precursors of Ξ²βchamigrene were assigned. The dihedral angles and distances determined from NMR measurements provide input p