TY - JOUR
T1 - Charge Separation in Triafulvenes
T2 - Application of the Para‐Fluorophenyl Tag 19f NMR Method
AU - Agranat, Israel
PY - 1975/9
Y1 - 1975/9
N2 - 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).
AB - 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).
UR - http://www.scopus.com/inward/record.url?scp=84987306881&partnerID=8YFLogxK
U2 - 10.1002/jccs.197500023
DO - 10.1002/jccs.197500023
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AN - SCOPUS:84987306881
SN - 0009-4536
VL - 22
SP - 191
EP - 195
JO - Journal of the Chinese Chemical Society
JF - Journal of the Chinese Chemical Society
IS - 3
ER -