期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 26, 期 72, 页码 17381-17385出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202004425
关键词
activation; fluoroalkyl groups; frustrated Lewis pair; hydrogen; tin
资金
- Deutsche Forschungsgemeinschaft (DFG) [MI477/31-1, 320753677]
- Academy of Finland [323480]
- RFBR [19-29-10003]
- Projekt DEAL
The reactivity of the frustrated Lewis pair (FLP) (F5C2)(3)SnCH2P(tBu)(2) (1) was investigated with respect to the activation of elemental hydrogen. The reaction of 1 at elevated hydrogen pressure afforded the intramolecular phosphonium stannate(II) (F5C2)(2)SnCH2PH(tBu)(2) (3). It was characterized by means of multinuclear NMR spectroscopy and single crystal X-ray diffraction. NMR experiments with the two isotopologues H-2 and D-2 showed it to be formed via an H-2 adduct (F5C2)(3)HSnCH2PH(tBu)(2) (2) and the subsequent formal reductive elimination of pentafluoroethane; this is supported by DFT calculations. Parahydrogen-induced polarization experiments revealed the formation of a second product of the reaction of 1 with H-2, [HP(tBu)(2)Me][Sn(C2F5)(3)] (4), in H-1 NMR spectra, whereas 2 was not detected due to its transient nature.
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