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Photoisomerization of 2,3-diphenylcyclopropane-1-carboxylic acid derivatives

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Abstract

Contrary to what is known about cis-1,2-diphenylcyclopropane and its derivatives, we find that they have triplet energies of ca. 311 kJ mol−1, do not undergo intersystem crossing upon direct excitation, undergo the less common adiabatic photoisomerization to the corresponding trans isomers, and show emission from excited 1,3-diradical intermediates.

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Authors and Affiliations

  1. Department of Chemistry, Tulane University, New Orleans, LA, 70118, USA

    J. Sivaguru & V. Ramamurthy

  2. Department of Chemistry, Columbia University, New York, NY, 10027, USA

    Steffen Jockusch & Nicholas J. Turro

Authors
  1. J. Sivaguru
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  2. Steffen Jockusch
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  3. Nicholas J. Turro
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  4. V. Ramamurthy
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This paper is dedicated to Professor Fred Lewis on the event of his 60th birthday.

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Sivaguru, J., Jockusch, S., Turro, N.J. et al. Photoisomerization of 2,3-diphenylcyclopropane-1-carboxylic acid derivatives. Photochem Photobiol Sci 2, 1101–1106 (2003). https://doi.org/10.1039/b306337m

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