School of Chemistry and Environmental Engineering, Anhui Polytechnic University, 241000, Wuhu, China.
Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Blvd., Xili, Nanshan District, 518055, Shenzhen, China.
Angew Chem Int Ed Engl. 2022 Dec 19;61(51):e202212823. doi: 10.1002/anie.202212823. Epub 2022 Nov 17.
In this contribution, we illustrate uranium complexes bearing a pendant borate (i.e. 1 and 2) or a pendant borane (i.e. 3 and 4) moiety via reaction of the highly strained uranacycle I with various 3-coordinate boranes. Complexes 3 and 4 represent the first examples of uranium complexes with a pendant borane Lewis acid. Moreover, complex 3 was capable of activation of CO, delivering a new CO activation mode, and an abnormal CO 1,2-insertion pathway into a U-N bond. The importance of the pendant borane moiety was confirmed by the controlled experiments.
在本研究中，我们通过强张力铀杂环 I 与各种 3 配位硼烷的反应，展示了带有侧基硼酸酯（即 1 和 2）或侧基硼烷（即 3 和 4）部分的铀配合物。配合物 3 和 4 代表了具有侧基硼烷路易斯酸的铀配合物的首例实例。此外，配合物 3 能够活化 CO，提供了一种新的 CO 活化模式和一条异常的 CO 1,2-插入到 U-N 键的途径。通过对照实验证实了侧基硼烷部分的重要性。
