σ Complex 1 or π complex 2? This is a controversial question for [R3Si–arene]+ adducts. A crucial test based on their reactivity, toward selected nucleophiles provides convincing evidence for the existence of the σ complex 1 in the gas phase.
No takes yet. Share an insight, caveat, or question.
Cacace et al. (1995) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: