| Literature DB >> 21834574 |
Takashi Kubo1, Yoshiki Katada, Akihiro Shimizu, Yasukazu Hirao, Kazunobu Sato, Takeji Takui, Mikio Uruichi, Kyuya Yakushi, Robert C Haddon.
Abstract
We have prepared and isolated neutral polycyclic hydrocarbon radicals. A butyl-substituted radical gave single crystals, in which a π-dimeric structure, not a σ-bonded dimer, was observed, even though steric protection was absent. Thermodynamic stabilization due to the highly spin-delocalized structure contributes effectively to the suppression of σ-bond formation.Entities:
Year: 2011 PMID： 21834574 DOI： 10.1021/ja2065768
Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419