Abstract
Ab initio current-density maps for the (4n + 2)-electron transition states of two thermally allowed [π2s + π2s + π2s] trimerisations, of ethyne to benzene (1), and of ethene to cyclohexane (2), show that both support σ diatropic ring currents, dominated by four-electron σ → σ* virtual excitation of HOMO electrons.
Original language | English |
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Pages (from-to) | 748-749 |
Number of pages | 2 |
Journal | Chemical Communications |
Publication status | Published - 2003 |