Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
권호 표지
DOI QR코드

DOI QR Code

Syntheses of Piperidinyloxyl Diradicals Containing Squaric Acid Moieties and Their Magnetic Properties

  • Jeong Soo Kim (Department of Polymer Engineering, Chungnam National University) ;
  • Lothar Dulog (2 Institut fur Technische Chemie)
  • Published : 1993.08.20
Download PDF
⟨ Previous Next ⟩

Abstract

Four compounds containing two 2,2,6,6-tetramethylpiperidin-1-yloxyl radicals were synthesized. They are all chemically bonded with squaric moieties. The diradical compounds show fundamentally the paramagnetic behaviors satisfying the theoretical magnetic susceptibility according to Curie's law. A diradical compound of salf-form 4 however shows a relatively strong antiferromagnetic interaction in comparison with other reported organic radicals. The antiferromagnetic interaction of diradical 4 approximates a value of J/k= -50 K by the theoretical analysis of its temperature dependence.

Keywords

References

  1. J. Chem. Phys. v.39 H. M. McConnell
  2. Theoret. Chim. Acta. v.10 N. Mataga
  3. Theoret. Chim. Acta v.47 A. A. Ovchinnikov
  4. Chem. Rev. v.88 J. S. Miller;A. J. Epstein;W. M. Reiff
  5. J. Phys. Chem. v.83 R. E. Coffman;G. R. Buttner
  6. J. Chem. Phys. v.85 T. P. Radhakrishnan;Z. G. Soos;H. Endres;L. J. Azevedo
  7. J. Am. Chem. Soc. v.108 Y. Teki;T. Takui;K. Itoh;H. Iwamura;K. Kobayashi
  8. Ann. Rev. Phys. Chem. v.17 P. L. Nordio;Z. G. Soos;H. M. McConnell
  9. Bull. Chem. Soc. Jap. v.44 J. Yamauchi
  10. Bull. Chem. Soc. Jap. v.46 N. Azuma;J. Yamauchi;K. Mukai;H. Ohya-Nishiguchi;Y. Deguchi
  11. Makromol. Chem. v.190 L. Dulog;J. S. Kim
  12. Angew. Chem. v.102 L. Dulog;J. S. Kim
  13. Int. Ed. Engl. v.29 L. Dulog;J. S. Kim
  14. J. Am. Chem. Soc. v.85 R. West;D. L. Powell
  15. Chem. Ber. v.118 P. H. M. Budzelaar;H. Dietrich;J. Macheleid;R. Weiss;P. R. Schleyer
  16. Bull. Chem. Soc. Jap. v.60 J. Aihira
  17. Synthesis A. H. Schmidt;W. Ried
  18. Synthesis K. Knorr;W. Ried
  19. Synthesis A. H. Schmidt;W. Ried
  20. Synthesis A. H. Schmidt
  21. Inorg. Chem. v.11 Y. Y. Lim;R. S. Drago
  22. Magnetochemistry R. L. Carlin
  23. Inorg. Chem. v.16 T. R. Felthouse;E. J. Laskowski;D. N. Hendrickson
  24. Inorg. Chem. v.17 T. R. Felthouse;D. N. Hendrickson
  25. J. Am. Chem. Soc. v.108 T. R. Felthouse;T-Y. Dong;D. N. Hendrickson;H-S. Shieh;M. R. Thomson
  26. J. Phys. Soc. Jap. v.24 A. Nakajima;H. Nishiguchi;Y. Deguchi
  27. J. Phys. Soc. Jap. v.25 J. Yamauchi;T. Fujito;E. Ando
  28. Phys. Rev. v.135 J. C. Bonner;M. E. Fisher
  29. Phys. Rev. v.165 W. Duffy Jr.;K. P. Barr
  30. Z. Naturforsch v.31b G. Sosnovsky;M. Konieczny
  31. Ph. D. Thesis, University Stuttgart H. Bruck
  32. J. Am. Chem. Soc. v.88 S. Cohen;S. G. Cohen
  33. Angew. Chem. v.78 G. Maahs;P. Hegenberg
  34. Chem. Ber. v.103 J. Gauger;G. Manecke

Cited by

  1. Samarium(0) and 1,1‘-Dioctyl-4,4‘-Bipyridinium Dibromide: A Novel Electron-Transfer System for the Chemoselective Reduction of Aromatic Nitro Groups vol.66, pp.3, 1993, https://doi.org/10.1021/jo005666q