Control of Magnetic Interactions in Polyarylmethyl Triplet Diradicals Using Steric Hindrance

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Three polyarylmethyl triplet diradicals are prepared by oxidation of the corresponding carbodianions. Solid-state studies of the diradicals using SQUID show an onset of short-range ferromagnetic interactions at temperatures below 4 K for diradical 32•and antiferromagnetic interactions below 70 K for diradicals 22• and 42•. The diradicals and the corresponding carbodianions in solution are characterized using ESR, NMR, and UV-vis spectroscopy, and voltammetry.

Original languageEnglish (US)
Pages (from-to)9235-9241
Number of pages7
JournalJournal of the American Chemical Society
Issue number24
StatePublished - Nov 1 1991


ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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