Improved Catalytic Activity and Stability of a Palladium Pincer Complex by Incorporation into a Metal–Organic Framework
A porous metal–organic framework Zr6O4(OH)4(L-PdX)3 (1-X) has been constructed from Pd diphosphinite pincer complexes ([L-PdX]4– = [(2,6-(OPAr2)2C6H3)PdX]4–, Ar = p-C6H4CO2 –, X = Cl, I). Reaction of 1-X with PhI(O2CCF3)2 facilitates I–/CF3CO2 – ligand exchange to generate 1-TFA and I2 as a solubl...
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Veröffentlicht in: | Journal of the American Chemical Society 2016-02, Vol.138 (6), p.1780-1783 |
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Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | A porous metal–organic framework Zr6O4(OH)4(L-PdX)3 (1-X) has been constructed from Pd diphosphinite pincer complexes ([L-PdX]4– = [(2,6-(OPAr2)2C6H3)PdX]4–, Ar = p-C6H4CO2 –, X = Cl, I). Reaction of 1-X with PhI(O2CCF3)2 facilitates I–/CF3CO2 – ligand exchange to generate 1-TFA and I2 as a soluble byproduct. 1-TFA is an active and recyclable catalyst for transfer hydrogenation of benzaldehydes using formic acid as a hydrogen source. In contrast, the homogeneous analogue t Bu(L-PdTFA) is an ineffective catalyst owing to decomposition under the catalytic conditions, highlighting the beneficial effects of immobilization. |
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ISSN: | 0002-7863 1520-5126 |
DOI: | 10.1021/jacs.5b12366 |