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  Strong Modulation of the Exchange Interaction in a Spin-Polarized, Aryl Ether-Linked 1,14-Biradical

Avdievich, N., & Forbes, M. (1996). Strong Modulation of the Exchange Interaction in a Spin-Polarized, Aryl Ether-Linked 1,14-Biradical. The Journal of Physical Chemistry, 100(6), 1993-1995. doi:10.1021/jp9531422.

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https://pubs.acs.org/doi/pdf/10.1021/jp9531422 (Publisher version)
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Avdievich, NI1, Author              
Forbes, MDE, Author
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1External Organizations, ou_persistent22              

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 Abstract: The time-resolved electron paramagnetic resonance spectrum of a 1,14-bis(alkyl)biradical linked via the para position of an aryl ether moiety has been studied. Previously the spectrum obtained at 50 °C could not be simulated using spin-correlated radical pair (SCRP) theory. It is successfully simulated here by adding modulation of the exchange interaction (J) to the fitting routine as a T2 relaxation mechanism. Inclusion of this line-broadening effect allowed an accurate value of the exchange interaction to be determined for this temperature. Comparison of this J value with that obtained in previous work for the meta isomer of the same biradical showed that the dominant mechanism of J coupling is through-solvent rather than through-bond. The magnitude of the J modulation matrix elements in the two isomers are discussed as are their temperature dependencies.

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 Dates: 1996-02
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1021/jp9531422
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Title: The Journal of Physical Chemistry
  Abbreviation : J. Phys. Chem.
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 100 (6) Sequence Number: - Start / End Page: 1993 - 1995 Identifier: ISSN: 1932-7447
CoNE: https://pure.mpg.de/cone/journals/resource/954926947766_3