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Absence of intersystem crossing in 1,4-didehydrobenzene

Lott, William B., Evans, Tom J., & Grissom, Charles B. (1994) Absence of intersystem crossing in 1,4-didehydrobenzene. Journal of the Chemical Society, Perkin Transactions 2, p. 2583.

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Abstract

The rate of singlet-to-triplet intersystem crossing in 1,4-didehydrobenzene (the biradical produced as a reactive intermediate in the thermal cycloaromatization of enediynes), cannot be increased by the application of an external magnetic field. The rate of product formation and the distribution of stable products of 2,3-di-n-propyl-1,4-didehydrobenzene thermolysis is unchanged at magnetic flux densities in the range 0–2000 G and at 66 000 G. Similarly, the rate of thermolysis of an unsymmetrical enediyne is insensitive to magnetic field flux in the same range. This finding precludes the modulation of enediyne reaction rates in pharmaceutical and synthetic pursuits.

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ID Code: 52744
Item Type: Journal Article
Additional URLs:
DOI: 10.1039/P29940002583
ISSN: 1364-5471 (online) 1472-779X (print)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 1994 Royal Society of Chemistry
Copyright Statement: Author can archive publisher's version/PDF Author's version on institutional repository after 12 months from acceptance or immediately with fee
Deposited On: 26 Jul 2012 09:06
Last Modified: 26 Jul 2012 13:01

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