H. Staab, K. Elbl-Weiser, C. Krieger
2000
Citations
0
Influential Citations
14
Citations
Journal
European Journal of Organic Chemistry
Abstract
1,2,4,5-Tetrakis(dimethylamino)benzene (4) and 2,3,6,7-tetrakis(dimethylamino)naphthalene (5) were prepared and structurally determined. Electron-donor functions, protonation, and the geometry of intramolecular hydrogen bonds are discussed. By oxidation of 4 to its dication the benzenoid aromaticity is cancelled in favour of two independent cyanine-type units as determined by X-ray structure analysis.