%0 Journal Article %1 Hausen.1993b %A Hausen, Hans Dieter %A Schulz, Andreas %A Kaim, Wolfgang. %D 1993 %J Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry %K cation crystal model radical structure structure;mol tetramethylquinoxalinium triiodide triiodide;flavosemiquinone %N 3 %P 343--345 %T Flavosemiquinone model systems. Part 3. Molecular and crystal structure of the cation radical salt 1,4,6,7-tetramethylquinoxalinium triiodide %X 1,4,6,7-Tetramethylquinoxalinium cation radical I represents the essential part of the isoalloxazine p system in N(1), N(5)-diprotonated cationic flavosemiquinones. The low-temp. x-ray crystal structure anal. of the stable radical salt of I with the sterically innocuous triiodide counterion allowed the examn. of intermol. interactions between arom. cation radicals in the solid. Although the planar cations form centrosym. pairs within the crystal lattice, their arrangement is only controlled by packing effects and not by any significant p-p interactions. [on SciFinder(R)]

@article{Hausen.1993b, abstract = {1,4,6,7-Tetramethylquinoxalinium cation radical I represents the essential part of the isoalloxazine \textgreek{p} system in N(1), N(5)-diprotonated cationic flavosemiquinones. The low-temp. x-ray crystal structure anal. of the stable radical salt of I with the sterically innocuous triiodide counterion allowed the examn. of intermol. interactions between arom. cation radicals in the solid. Although the planar cations form centrosym. pairs within the crystal lattice, their arrangement is only controlled by packing effects and not by any significant \textgreek{p}-\textgreek{p} interactions. [on SciFinder(R)]}, added-at = {2019-07-15T13:41:23.000+0200}, author = {Hausen, Hans Dieter and Schulz, Andreas and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/263f22ff17eb8c84d1f3169b64435f4f3/b_schwederski}, interhash = {73b57e750dca3abfa22f0247818e582f}, intrahash = {63f22ff17eb8c84d1f3169b64435f4f3}, issn = {0300-9580}, journal = {Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry}, keywords = {cation crystal model radical structure structure;mol tetramethylquinoxalinium triiodide triiodide;flavosemiquinone}, number = 3, pages = {343--345}, timestamp = {2019-07-15T11:42:10.000+0200}, title = {Flavosemiquinone model systems. Part 3. Molecular and crystal structure of the cation radical salt 1,4,6,7-tetramethylquinoxalinium triiodide}, year = 1993 }