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Temperature Dependence of Carbon-13 Shieldings as a Probe for Conformational Equilibra

  • Jung Miewon (Department of Chemistry, Sungshin Women's University)
  • 발행 : 1992.12.20

초록

The temperature dependence of C-13 chemical shifts are observed for the cyclooctanone arylhydrazones. The temperature-dependent chemical shifts for these derivatives are explained by postualating the existence of two equilibrating structures. In addition, the assignment between the $^{13}C$ signals of methylene carbon pairs can be done by application of the ${gamma}$ -substituent effect.

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참고문헌

  1. Carbon-13 NMR Spectroscopy J. B. Stothers
  2. Carbon-13 Nuclear Magnetic Resonance for Organic Chemists G. C. Levy;G. L. Nelson
  3. J. Am. Chem. Soc. v.87 J. B. Lambert;J. D. Roberts
  4. Org. Magn. Reson. v.13 H. J. Scheider;W. Freitag;V. Hopper
  5. Org. Magn. Reson. v.11 H. N. Cheng;F. A. Bovey
  6. J. Am. Chem. Soc. v.103 J. B. Lambert;A. R. Vagenas;S. J. Somani
  7. J. Am. Chem. Soc. v.109 T. S. Sorensen;R. P. Kirchen;K. Ranganayakulu
  8. J. Am. Chem. Soc. v.109 T. S. Sorensen
  9. Organic experiments L. F. Fieser;K. L. Williamson
  10. J. Am. Chem. Soc. v.83 A. C. Cope;D. M. Gals
  11. Bull. Korean. Chem. Soc. v.12 M. W. Jung
  12. Isot. Org. Chem. v.6 D. A. Forsyth
  13. J. Chem. Phys. v.38 M. Karplus;J. A. Pople
  14. J. Am. Chem. Soc. v.89 B. W. Cheney;D. M. Grant
  15. Org. Mag. Res. v.12 J. B. Stothers;R. E. Klinck
  16. J. Chem. Soc. Chem. Commun. F. W. Wehrli;D. Jeremic;M. C. Mihailovic;S. J. Milosavljevic