SCHOLZ, M and GESCHEIDT, G and SCHOBERL, U and DAUB, J (1992) COUNTERION AND SOLVATION EFFECTS ON THE CONFORMATIONS OF THE RADICAL-ANIONS OF 2,5-DICYANOVINYL SUBSTITUTED FURAN AND THIOPHENE - AN EPR AND ENDOR STUDY. JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 (12). pp. 2137-2143. ISSN 0300-9580,
Full text not available from this repository.Abstract
The radical anions of two tetranitrile compounds, i.e., 2,2'-(furan-2,5-diyldimethylidene)-bispropanedinitrile (1) and 2,2'-(thiophene-2,5-diyldimethylidene)bispropanedinitrile (2), have been investigated in a 1,2-dimethoxyethane/N,N,N',N',N",N"-hexamethylphosphoric triamide mixture, 1,2-dimethoxyethane,tetrahydrofuran, and 2-methyltetrahydrofuran as the solvents and with Li+, Na+, K+, Cs+ as the counterions and in N,N-dimethylformamide with Zn2+ as counterion. A remarkable dependence of the molecular symmetry upon ion-pair formation is found for both molecules. The symmetry of both radical anions increases to C2v under conditions favouring contact ion-pair formation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ELECTRON-SPIN-RESONANCE; TRIPLE RESONANCE; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/54269 |
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