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High-Spin Multiplet Endor and Triple Resonance: Its Application to a Model Compound for Organic Ferrimagnets

  • T. Takui
  • M. Endoh
  • S. Kita
  • Y. Teki
  • T. Kinoshita
  • K. Itoh
Conference paper

Abstract

We have applied single-crystal ENDOR and TRIPLE resonance spectroscopies to the first organic high-spin molecule, m-phenylenebis(phenyl- methylene), 1 in its quintet ground state, establishing high-spin multiplet ENDOR and TRIPLE resonance spectroscopies. Both the magnitude and absolute sign of all the proton hyperfine coupling constants have been determined from the 1H-ENDOR/TRIPLE data, yielding crucial information on the spin- density distribution in its pi-electron network. We have designed and synthesized a model compound, 2 for the units of organic ferrimagnets which possesses antiferromagnetically-exchange coupled heterospins. The high-spin multiplet 1 H-(or 13C-) ENDOR and TRIPLE resonance of the heterospin system have demonstrated the salient features of its spin structure which can be characterized in terms of unusually large negative spin polarization.

References

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    K.Itoh, T.Takui, Y.Teki, T.Kinoshita, J.Mol.Electronics, 4, 181 (1988).Google Scholar
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    Y.Teki, T.Takui, T.Kinoshita, S.Ichikawa, K.Itoh, ibid., 141, 201 (1987).Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • T. Takui
    • 1
  • M. Endoh
    • 1
  • S. Kita
    • 1
  • Y. Teki
    • 1
  • T. Kinoshita
    • 1
  • K. Itoh
    • 1
  1. 1.Department of Chemistry, Faculty of ScienceOsaka City University SugimotoOsakaJapan

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