| Abstract: | Tetrathiafulvalenes. XVI. Spectroscopic and Electrical Properties of TTF and TTF-TCNQ-Complexes UV-vis-spectra of mono- and dications of the TTF 2 show in comparison to those of TTF 1 and 3 that the aryl substituent in the TTF 2 is more twisted from the TTF-plane than in 1 and 3 . Absorption maxima of mono- and dications from TTF 1 and 3 lie at a significantly greater wavelength than absorption maxima of mono- and dications from TTF 2 , because a better electronic interaction between substituents in the aryl-group and the positively charged dithiolium-ring is possible. TCNQ-complexes of smoother TTF 3 also have a higher electrical conductivity than TCNQ-complexes of 2 . |
