A dinuclear oxomolybdenum(VI) complex, [Mo2O6(4,4 %26apos;-di-tert-butyl-2,2 %26apos;-bipyridine)(2)], displaying the {MoO2(mu-O)(2)MoO2}(0) core, and its use as a catalyst in olefin epoxidation

作者：Amarante Tatiana R; Neves Patricia; Almeida Paz Filipe A; Pillinger Martyn; Valente Anabela A; Goncalves Isabel S^*

来源：Inorganic Chemistry Communications, 2012, 20: 147-152.

DOI：10.1016/j.inoche.2012.02.038

• Molybdenum
• Dinuclear complexes
• 4,4 %26apos
• -di-tert-butyl-2,2 %26apos
• -bipyridine
• Olefin epoxidation
• Crystal structure

The dinuclear complex [Mo2O6(di-tBu-bipy)(2)] (1) (di-tBu-bipy = 4,4%26apos;-di-tert-butyl-2,2%26apos;-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.

• 出版日期2012-6