Consequences of triplet aromaticity in 4n pi-electron annulenes: Calculation of magnetic shieldings for open-shell species - Research portal of Justus Liebig University Giessen:

Journal article

Consequences of triplet aromaticity in 4n pi-electron annulenes: Calculation of magnetic shieldings for open-shell species

Authors list: Gogonea, V; Schleyer, PV; Schreiner, PR

Publication year: 1998

Pages: 1945-1948

Journal: Angewandte Chemie International Edition

Volume number: 37

Issue number: 13-14

ISSN: 1433-7851

DOI Link: https://doi.org/10.1002/(SICI)1521-3773(19980803)37:13/14<1945::AID-ANIE1945>3.0.CO;2-E

Publisher: Wiley

Abstract:

The triplet states of 4nπ‐electron annulenes,
as suggested by Baird in 1972, should be regarded as aromatic rather
than antiaromatic. Such triplet states show planarized, symmetrical
geometries (see C₉H₉⁺ on the right),
much lower energies than corresponding acylic triplet reference species,
and evidence for diatropic ring currents (nucleus‐independent chemical
shifts and magnetic susceptibility exaltations).

Authors/Editors

- Uni.-Prof. Dr. Peter Richard Schreiner, PhD

Citation Styles

Harvard Citation style: Gogonea, V., Schleyer, P. and Schreiner, P. (1998) Consequences of triplet aromaticity in 4n pi-electron annulenes: Calculation of magnetic shieldings for open-shell species, Angewandte Chemie International Edition, 37(13-14), pp. 1945-1948. https://doi.org/10.1002/(SICI)1521-3773(19980803)37:13/14<1945::AID-ANIE1945>3.0.CO;2-E

APA Citation style: Gogonea, V., Schleyer, P., & Schreiner, P. (1998). Consequences of triplet aromaticity in 4n pi-electron annulenes: Calculation of magnetic shieldings for open-shell species. Angewandte Chemie International Edition. 37(13-14), 1945-1948. https://doi.org/10.1002/(SICI)1521-3773(19980803)37:13/14<1945::AID-ANIE1945>3.0.CO;2-E