کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1304100 | 1498970 | 2012 | 6 صفحه PDF | دانلود رایگان |
The dinuclear complex [Mo2O6(di-tBu-bipy)2] (1) (di-tBu-bipy = 4,4′-di-tert-butyl-2,2′-bipyridine) was obtained as a minor product of the hydrothermal reaction of MoO3 and di-tBu-bipy, and structurally characterized by single-crystal X-ray diffraction. In the molecular structure of 1 two distorted MoO6 octahedra share a common edge to form a dioxo-bridged Mo2O6 unit which is coordinated by di-tBu-bipy ligands. The catalytic performance of 1 for the epoxidation of non-functionalized olefins using tert-butylhydroperoxide as oxidant compares favorably with that reported for other oxomolybdenum(VI) complexes bearing the same organic ligand. The catalyst exhibits regioselectivity toward internal olefin epoxidation over external olefin epoxidation.
A rare example of a dinuclear molybdenum complex exhibiting the {Mo2O6}0 core has been isolated from the hydrothermal reaction of MoO3 and 4,4′-di-tert-butyl-2,2′-bipyridine, and structurally characterized by single crystal X-ray diffraction. The complex is a particularly active and regioselective catalyst for the epoxidation of non-functionalized olefins using tert-butylhydroperoxide as oxidant.Figure optionsDownload as PowerPoint slideHighlights
► The structure of a rare example of a dinuclear molybdenum complex exhibiting the {Mo2O6}0 core is described.
► Crystals of the complex were obtained after the hydrothermal reaction of MoO3 and 4,4′-di-tert-butyl-2,2′-bipyridine.
► The dioxo-bridged complex possesses catalytic activity for the epoxidation of non-functionalized olefins.
► The catalytic reaction is regioselective toward the epoxidation of internal double bonds.
Journal: Inorganic Chemistry Communications - Volume 20, June 2012, Pages 147–152