Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, PL-44100 Gliwice, Poland.
J Am Chem Soc. 2010 Mar 17;132(10):3246-7. doi: 10.1021/ja910076n.
The radical cation of carbon-sulfur [7]helicene is configurationally stable in solution at room temperature. In contrast to the radical cations of alpha-oligothiophenes, which form diamagnetic pi-dimers at low temperature, the radical cation of this helical, cross-conjugated beta-oligothiophene shows a low propensity toward dimerization.
碳-硫 [7] 螺旋芴的自由基阳离子在室温下的溶液中构型稳定。与低温下形成反磁性 π-二聚体的 α-低聚噻吩自由基阳离子相反，这种螺旋、交叉共轭的 β-低聚噻吩自由基阳离子表现出低二聚倾向。
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