Interrupted σ-bonds in organic materials with colligative magnetic properties

Sei Hum Jang, James E. Jackson, Ruth Ann Bertsch, Bart Kahr

Research output: Contribution to journalArticlepeer-review


Solutions of tris(2,6-dimethoxyphenyl)methyl radical (1) and lithium salts form solids showing unusual magnetic behavior. The propeller-shaped radicals, with their tripods of nucleophilic oxygens, are preorganized polydentate ligands. By coordination with small alkali metal cations the radicals may stack, enforcing spin-spin interactions in extended chains of paramagnets. Ab initio calculations on a linear H3C·Li+·CH3 model shows that high-spin (ferromagnetic) electron coupling is favored for a wide range of radical-Li+ distances.

Original languageEnglish (US)
Pages (from-to)289-303
Number of pages15
JournalMolecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
Issue number1
StatePublished - Jan 1 1992


  • cryptand
  • diradical
  • molecular magnet
  • organic ferromagnet
  • triarylmethyl radical
  • triplet state

ASJC Scopus subject areas

  • Condensed Matter Physics


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