The radical cation of 1,4-dihydropentalene and its photochemical formation from bicyclo [3.3.0] octa-2,6-diene-4,8-diyl cation

Thomas Bally; Leo Truttmann; Sheng Dai; Jih Tzong Wang; Ffrancon Williams

doi:10.1016/0009-2614(93)87122-J

The radical cation of 1,4-dihydropentalene and its photochemical formation from bicyclo [3.3.0] octa-2,6-diene-4,8-diyl cation

Thomas Bally, Leo Truttmann, Sheng Dai, Jih Tzong Wang, Ffrancon Williams

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

In contrast to recent claims by Rhodes and Glidewell, comparison of both ESR and electronic absorption spectra shows that the photoproduct of the recently characterized radical cation of bicyclo [3.3.0] octa-2,6-diene-4,8-diyl is identical to the 1,4-dihydropentalene radical cation, i.e. a linear conjugated tautomer of the former produced by two hydrogen shifts. Ab initio calculation indicate that the tetracyclic diyl radical cation postulated by Rhodes and Glidewell is inaccessible under their experimental conditions (hν ≤ 2.2 eV).

Original language	English
Pages (from-to)	144-149
Number of pages	6
Journal	Chemical Physics Letters
Volume	212
Issue number	1-2
DOIs	https://doi.org/10.1016/0009-2614(93)87122-J
State	Published - Sep 3 1993
Externally published	Yes

Funding

The work in Fribourg is part of project No. 20-34071 .92o f the SwissN ational ScienceF oundation. The researcha t the University of Tennesseew assup-portedb y the Division of Chemical Sciences,O ffice of Basic EnergyS ciences,U S Departmento f Energy (Grant No. DE-FG0588ER13852).

Funders	Funder number
Division of Chemical Sciences
U S Departmento f Energy	DE-FG0588ER13852
University of Tennesseew

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abstract = "In contrast to recent claims by Rhodes and Glidewell, comparison of both ESR and electronic absorption spectra shows that the photoproduct of the recently characterized radical cation of bicyclo [3.3.0] octa-2,6-diene-4,8-diyl is identical to the 1,4-dihydropentalene radical cation, i.e. a linear conjugated tautomer of the former produced by two hydrogen shifts. Ab initio calculation indicate that the tetracyclic diyl radical cation postulated by Rhodes and Glidewell is inaccessible under their experimental conditions (hν ≤ 2.2 eV).",

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AU - Truttmann, Leo

AU - Dai, Sheng

AU - Tzong Wang, Jih

AU - Williams, Ffrancon

PY - 1993/9/3

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AB - In contrast to recent claims by Rhodes and Glidewell, comparison of both ESR and electronic absorption spectra shows that the photoproduct of the recently characterized radical cation of bicyclo [3.3.0] octa-2,6-diene-4,8-diyl is identical to the 1,4-dihydropentalene radical cation, i.e. a linear conjugated tautomer of the former produced by two hydrogen shifts. Ab initio calculation indicate that the tetracyclic diyl radical cation postulated by Rhodes and Glidewell is inaccessible under their experimental conditions (hν ≤ 2.2 eV).

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The radical cation of 1,4-dihydropentalene and its photochemical formation from bicyclo [3.3.0] octa-2,6-diene-4,8-diyl cation

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