[DBU]C60. Spin pairing in a fullerene salt
1994; Elsevier BV; Volume: 220; Issue: 1-2 Linguagem: Inglês
10.1016/0009-2614(94)00124-3
ISSN1873-4448
AutoresAndreas Skiebe, Andreas Hirsch, H. Klos, B. Gotschy,
Tópico(s)Polymer Nanocomposite Synthesis and Irradiation
ResumoThe treatment of C60 with the tertiary amine 1,8-diazabicyclo[5.4.0]undec-7-ene results in the formation of a diamagnetic zwitterion salt [DBU]C60. This addition reaction was monitored in solution by UV/VIS/NIR and ESR spectroscopy. It is shown that in the first step a single electron transfer occurs leading to the C−760 monoradical anion and the DBU radical cation. In a subsequent step [DBU]C60 is formed upon a radical recombination process. The represented results give evidence for the reaction mechanism of the nucleophilic amine additions to C60 proposed earlier.
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