Charge Separation in Triafulvenes: Application of the Para‐Fluorophenyl Tag 19f NMR Method

Israel Agranat*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Triafulvene (1) is the simplest [n]fulvene. Interest in triafulvenes centered on the potential contributions (in the ground state) of dipolar ‘aromatic’ structures of the type la, in which three‐membered ring assumes ‘cyclopropenium’ character2‐5). Various attempts have been made to increase these dipolar contributions by introducing electron withdrawing substituents at the exocyclic carbon atom (C4) of the triafulvene skeleton2‐6). A striking illustration of this trend is the study of the triapentafulvalene (2) system, motivated by the search for aromatic ‘cyclopropenium‐cyclopentadienide’ structures (2a)3). Cyclopropenone (3), the simplest [n]annulenone, may also fall within the category of triafulvenes formally being viewed upon as 4‐oxatriafulvene with a potential contribution of a cyclopropenium oxide (3a) structure to the ground state resonance hybride5,7,8).

Original languageEnglish
Pages (from-to)191-195
Number of pages5
JournalJournal of the Chinese Chemical Society
Volume22
Issue number3
DOIs
StatePublished - Sep 1975

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