迈向用于仲氢诱导极化及其他应用的耐水氨基硼烷。
Towards water-tolerant -aminoboranes for parahydrogen-induced polarization and beyond.
作者信息
Konsewicz Karolina, Repo Timo, Zhivonitko Vladimir V
机构信息
NMR Research Unit, Faculty of Science, University of Oulu, P.O. Box 3000, Oulu, 90014, Finland.
Department of Chemistry, University of Helsinki, A. I. Virtasen aukio 1, Helsinki, 00014, Finland.
出版信息
Chem Commun (Camb). 2025 Apr 3;61(29):5443-5446. doi: 10.1039/d5cc00528k.
Three orders of magnitude of H NMR signal enhancement were observed in the metal-free activation of parahydrogen using an -aminoborane in the presence of a 100-fold water excess at 9.4 T. Kinetic studies corroborated the reversibility of water addition to the intramolecular N-B Lewis centers in both polar and nonpolar solvents. Furthermore, DFT modeling supported these results.
在9.4 T、水过量100倍的条件下，使用氨基硼烷对仲氢进行无金属活化时，观察到核磁共振氢谱（¹H NMR）信号增强了三个数量级。动力学研究证实，在极性和非极性溶剂中，水与分子内氮-硼（N-B）路易斯中心加成反应具有可逆性。此外，密度泛函理论（DFT）建模也支持了这些结果。
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