| Autor: |
Akamatu, Hideo, Maekawa, Tsuneo, Iida, Yôichi, Kinoshita, Minoru |
| Zdroj: |
Bulletin of the Chemical Society of Japan; June 1964, Vol. 37 Issue: 6 p849-853, 5p |
| Abstrakt: |
The paramagnetic nature of “violanthrone-B” has been studied. The spin concentration in this substance has been determined by the ESR absorption, which is consistent with the value estimated from the magnetic susceptibility and its variation with the temperature. It has been concluded that the molecules of violanthrone-B, in the amount of about 40 per cent of all the molecules, are in a free radical state. It has been suggested, according to the proposed structure of violanthrone-B, that the free radical might result from detaching a hydrogen atom from a peripheral carbon of the tetrahedral type of bonding, which changes thereafter to the trigonal type of bonding. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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