Triple Frustrated Lewis Pair-Type Reactivity on a Single Rare-Earth Metal Center |
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Authors: | Xiong Sun Dr Wei Su Kaiying Shi Zhuoyi Xie Prof?Dr Congqing Zhu |
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Institution: | State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093 P. R. China |
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Abstract: | Rare-earth metal cations have been used rarely as Lewis-acidic components in the chemistry of frustrated Lewis pairs (FLPs). Herein, we report the first cerium/phosphorus system ( 2 ) employing a heptadentate N4P3 ligand, which exhibits triple FLP-type reactivity towards a series of organic substrates, including isocyanates, isothiocyanates, diazomethane, and azides on a single rare-earth Lewis acidic Ce center. This result shows that the Ce center and three P atoms in 2 could simultaneously activate three equivalents of small molecules under mild conditions. This study broadens the diversity of FLPs and demonstrates that rare earth based FLP exhibit unique properties compared with other FLP systems. |
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Keywords: | cerium frustrated Lewis pairs heptadentate ligands heteroallenes phosphorus |
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