Preparation and 13C NMR Spectroscopic Study of Disubstituted Adamantane-1,3-dimethyldiyl Dications
β Scribed by Heagy, Michael D.; Wang, Qi; Olah, George A.; Prakash, G. K. Surya
- Book ID
- 126967327
- Publisher
- American Chemical Society
- Year
- 1995
- Tongue
- English
- Weight
- 441 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0022-3263
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## Abstract Six groups of diastereomeric 2,4βdisubstituted adamantanes were studied with DFTβGIAOβNBO (natural orbital analysis) methods. The calculated ^13^C chemical shifts reproduce well the experimental data. It was found that among all diastereomers, those bearing substituents in Ξ΄β__syn__βaxi
Biphenylene dianion has been prepared by Li reduction of the parent hydrocarbon. It is stable below -30' and was characterized by its 'Hand I3C-NMR spectra. A comparison of these data with those of the dication indicates he existence of ion pairs in the dianion case which are responsible for a diffe