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Attacking boron nucleophiles: NMR properties of five-membered diazaborole rings

机译:攻击硼亲核试剂:五元二氮杂硼杂环的核磁共振性质

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摘要

This paper reports computed NMR spectral data for the diazaborole anion (C2H4B1N2-) and the corresponding neutral five-membered rings with B-H (C2H5B1N2, diazaborole) and B-Li (C2H4B1Li1N2, Li-diazaborole) bonds, which are the central moieties of newly synthesized nucleophilic organoboryl five-membered rings, recently reported by Segawa et al. (Science 2006, 314, 113). Both spin-spin coupling constants and chemical shifts were obtained using high-level ab initio calculations. These data are a necessary complement to the very scarce experimental information available.
机译:本文报告了二氮杂硼酸根阴离子(C2H4B1N2-)以及相应的带有BH(C2H5B1N2,二氮杂硼酸)和B-Li(C2H4B1Li1N2,Li-二氮杂硼酸)键的中性五元环的NMR光谱数据,这是新的中心部分合成的亲核有机硼基五元环,最近由Segawa等报道。 (Science 2006,314,113)。自旋-自旋偶合常数和化学位移均使用高水平的从头算得到。这些数据是对非常稀缺的实验信息的必要补充。

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