Transannulare π-π-Wechselwirkung in Cyclophanen
✍ Scribed by Dr. Roberto Boschi; Dr. Werner Schmidt
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 220 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0044-8249
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📜 SIMILAR VOLUMES
Summavy. By CNDO-CI calculations we have found that dicarbonyl compounds exhibit only two n --f n\* transitions in the visible or near UV. region, instead of four as expected from simpler MO-models. The dominant features of the long-wavelength electronic spectra may be characterized by the relative
Phosphin-Ylide (>E -2) sind umso bestandiger gegen elektrophile Reagenzien (z. €3. Wasser), je besser die negative Ladung am Kohlenstoff auf das iibrige Molekiil delokalisiert werden kann. Beispielsweise lieBen sich Triphenylphosphin-fluorenylidl) und -cyclopentadienylid 2) in Substanz gewinnen. Dep
The chemistry of carbonlum Ion stabilized by means of an acprouriately located'it-bond or, in some cases, of a c-bond has been remarkably advanced(l). The observed strong C+-'ilinteractlon suuaests that If an unconjuqated diene is treated wlth catlonic rea.qent, transannular cyclizatlon should take
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