ISSN:
1434-193X
Keywords:
DCNQI
;
Quinones
;
Voltammetry
;
CT complexes
;
Radical ions
;
Chemistry
;
General Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Bisquinones 16-20, in which the quinoid moieties are tethered by 2-6 methylene units, have been synthesized via the bis(dimethoxybenzenes) 2, 6, 9, 14, and 15. Compounds 16-20 were transformed into the corresponding bis(DCNQIs) 21-25 using standard procedures. Interactions between the two quinoid units, which fade with the length of the tethering chain, have been observed by 13C-NMR spectroscopy, backed by calculated charge densities (Table 1) and by their cyclovoltammograms which indicate two independent two-step electron transfers. Similar results arise from ESR investigations of the bis(quinone) radical ions. All DCNQIs 21-25 form charge-transfer complexes with TTF and copper radical anion salts with reasonable powder conductivities. Since single crystals could not be grown, the structure of these materials remains unknown.
Type of Medium:
Electronic Resource
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