National Changhua University of Education Institutional Repository : Item 987654321/10069
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题名: B2P2 Rings: Through-space π Bond or Stable Diradical? A Theoretical Study
作者: Cheng, Mu-Jeng;Hu, Ching-Han
贡献者: 化學系
日期: 2003
上传时间: 2012-05-03T06:17:19Z
出版者: Taylor & Francis
摘要: Theoretical study of a series of B2P2 ring molecules shows that bulky substituent groups facilitate the existence of bond-stretch isomers. With the largest substituent group, the long bond (LB) isomer is more stable and adopts a mainly through-space B-B bond. Among these LB isomers we observed extraordinarily large singlet-triplet energy separation, a small number of effectively unpaired electrons, and the convergence of spin symmetry-broken (UDFT) computations to RDFT. The T 1 diagnostic for the LB isomer of prototype compound obtained at the CCSD/6-311G level of theory is smaller than 0.02. We thus conclude that these B2P2 ring molecules do not characterize as diradicals.
關聯: Mol. Phys., 101(9): 1319-1323
显示于类别:[化學系] 期刊論文

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