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Octahydriodo diborane (B_2H_8) and its protonated cations containing five-, six-,and seven-coordinate boron atoms

机译:八氢乙硼烷(B_2H_8)及其质子化阳离子,含五,六和七配位硼原子

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摘要

Structures of octahydriodo diborane (B_2H_8) 1 and its protonated 3, diprotonated 5, triprotonated 6, and tetraprotonated 7 ions were found to be calculationally viable minima at the MP2/cc-pVTZ level of theory. Each structure contains two-electron three-center (2e-3c) bonds. The protonation of 1 to form 3 was found to be strongly exothermic by 176.0 kcal/mol. Subsequent protonation of 3 to form 5 was also found to be exothermic by 28.4 kcal/mol. Further protonation of 5 to form 6 was, however, computed to be en-dothermic by 122.0 kcal/mol whereas protonation of 6 to form 7 was again highly endothermic by 238.8 kcal/moL Deprotonation barriers of the ions were also computed.
机译:在理论上MP2 / cc-pVTZ水平上,发现八氢乙硼烷(B_2H_8)1及其质子化3,二质子化5,三重质子化6和四质子化7离子的结构在计算上是可行的最小值。每个结构都包含两个电子的三中心键(2e-3c)。发现1到3的质子化以176.0kcal / mol强烈放热。还发现随后的3质子化为5的质子以28.4 kcal / mol放热。然而,进一步计算出5形成6的质子为122.0 kcal / mol的吸热峰,而6形成7的质子又通过238.8 kcal / moL的高吸热峰也被计算出来。

著录项

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  • 作者单位

    Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, University Park, Los Angeles, CA 90089-1661;

    Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, University Park, Los Angeles, CA 90089-1661;

    Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, University Park, Los Angeles, CA 90089-1661;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ab initio; boronium; hypercoordinate; cations; polycations;

    机译:从头开始硼超坐标阳离子;聚阳离子;

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