Preparation and properties of isomeric polyphenylacetylenes
โ Scribed by Kern, R. J.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1969
- Tongue
- English
- Weight
- 548 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0449-296X
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๐ SIMILAR VOLUMES
Before and after cis-trans isomerization, the observed 13 C-NMR chemical shifts of poly(phenylacetylene) (PPA) in the solid state were investigated on the basis of 13 C-NMR chemical shift calculations within AM1 for the cis-transoidal and deflected trans-transoidal forms. Two 13 C-resonance peaks in
The preparations of chlorinated and brominated polyphenylacetylene are reported. Elemental analyses show 28.9% chlorine and 25.4% bromine in the halogenated derivatives. The structures of the halogenated polymers have been studied by u.v., i.r: and H-NMR. The reactions of halogens with conjugated do