External Electric Fields Interrupt the Concerted Cope Rearrangement of Semibullvalene

Croix J. Laconsay, Dibyendu Mallick*, Sason Shaik

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The topic of this paper is whether the mechanism of the degenerate Cope rearrangement of semibullvalene can be affected by the presence of electrostatic fields. Herein, we report that the shape of the energy surface, as demonstrated by an "interrupted"(stepwise) mechanism, is altered in the presence of a copper cation, Cu+. Natural bond-orbital and block-localized wave-function energy decomposition analyses suggest that orbital and electrostatic interactions play a major role in altering the shape of the energy surface. Applying additional external electric fields (EEFs) induces a significant change to the energy surface with Cu+ present but negligible effects in the absence of Cu+. These findings are consistent with recent studies that demonstrate that EEFs more readily stabilize/destabilize systems with larger, more polarizable, dipole moments.

Original languageEnglish
Pages (from-to)731-738
Number of pages8
JournalJournal of Organic Chemistry
Volume86
Issue number1
DOIs
StatePublished - 1 Jan 2021

Bibliographical note

Publisher Copyright:
© 2020 American Chemical Society.

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