Beer, Ernst and Daub, Jörg and Palivan, Cornelia and Gescheidt, Georg (2002) Redox and magnetic switching in 1,3,5-acceptor-substituted benzenes: reversible formation of radical anions, dianions and trianions in doublet, triplet, and quartet spin states. JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 (9). pp. 1605-1610. ISSN 1472-779X
Full text not available from this repository. (Request a copy)Abstract
1,3,5-Tris(dicyanovinyl)-substituted benzene 1 can accept one, two, and three electrons stepwise, as shown by (spectro) electrochemical methods. When the corresponding redox stages are attained by K-metal reduction in THF and 2-methyltetrahydrofuran, paramagnetic resonance and optical techniques can identify equilibria between adjacent redox states and different (para) magnetic stages. It can be shown that the dianion can adopt a triplet state whereas the trianion is present in a doublet and quartet spin multiplicity. Similar findings are established for the methoxy-substituted derivative 2. The formation of the different paramagnetic stages is closely connected to the association of the anions with alkali-metal countercations.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EXCITED MOLECULAR-FIELD; QUINTET S=2 STATES; SYSTEMS; IONS; CHEMISTRY; UNITS; S=3/2; ESR; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Alumni or Retired Professors > Prof. Dr. Jörg Daub |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Nov 2021 15:04 |
| Last Modified: | 16 Nov 2021 15:04 |
| URI: | https://pred.uni-regensburg.de/id/eprint/40778 |
Actions (login required)
 |
View Item |
