Bulletin of the Korean Chemical Society

  • 제14권4호
  • /
  • Pages.465-468
  • /
  • 1993
  • /
  • 0253-2964(pISSN)
  • /
  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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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)
  • 발행 : 1993.08.20
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초록

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.

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참고문헌

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피인용 문헌

  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