The question of whether d-orbital8 play an important role in the ground state bonding of the compounds thiophene (l), 1, 3-dithiolium cation (Z), 1, 2-dithiolium cation (3), thiapyrylium cation (4) and thiathiophthene (5) has aroused much controversy. l-4 We now report a series of non-empirical calc
Energetics of some sulphur heterocycles
โ Scribed by M. A. V. Ribeiro da Silva; Ana Filipa L. O. M. Santos
- Publisher
- Springer Netherlands
- Year
- 2009
- Tongue
- English
- Weight
- 435 KB
- Volume
- 95
- Category
- Article
- ISSN
- 0022-5215
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A fractionation method for isolating the polycyclic aromatic sulphur heterocyclesfrom complex mixtures of polycyclic aromatic compounds was evaluated with respect to recovery for selected standard compounds. It was found that recovery varied from 0 to 70% depending on the structure of the compound.
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