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Radical-Radical Interaction through a Saturated Link: Methylenebis-6-oxoverdazyl
Journal of Organic Chemistry (2006)
  • David J R Brook, San Jose State University
  • Gordon T Yee, Virginia Polytechnic Institute and State University
The diradical methylenebis(1,5-diisopropyl-6-oxoverdazyl) was synthesized by benzoquinone oxidation of the corresponding bis(tetrazane). The diradical crystallizes in the monoclinic space group C2/c with cell parameters a = 21.1411(8) Å, b = 12.4781(5) Å, c = 8.2457(3) Å, β = 108.638(2)°, V = 2061.15 Å3, Z = 4. Magnetic measurements indicate the diradical has a singlet ground state and triplet excited state at 150 cm-1. Interaction between the nonconjugated radical centers is also seen in the UV−vis spectrum as a broad shoulder near 500 nm that is not apparent in the spectrum of the monoradical.
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David J R Brook and Gordon T Yee. "Radical-Radical Interaction through a Saturated Link: Methylenebis-6-oxoverdazyl" Journal of Organic Chemistry Vol. 71 Iss. 13 (2006)
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