Analysis shows π-complex formation in benzidine rearrangement, suggesting new insights into molecular interactions.
Michael Dewar famously implicated a so-called π-complex in the benzidine rearrangement, back in the days when quantum mechanical calculations could not yet provide a quantitatively accurate reality check. Because this π-complex actually remains a relatively unusual species to encounter in day-to-day chemistry, I thought I would try to show in a simple way how it forms.
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Henry S. Rzepa (2013) studied this question.
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