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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 14, Number 6
BKCSDE 14(6)
June 20, 1993

Title	Syntheses and Reactivites with Olefins of Ruthenium(Ⅳ) Oxo/Ruthenium(Ⅱ)-Aqua Complexes that Contain 2,6-Bis(N-pyrazolylpyridine)
Author	Du-Hwan Jo, Hwan-Jin Yeo*
Keywords
Abstract	The syntheses and reactivities with olefins of [RuⅡ(L3)(L2)OH2]2+ [L3= 2,6-bis(N-pyrazolyl)pyridine(bpp), 2,6-bis(3,5-dimethyl-N-pyrazolyl)pyridine (Me4bpp); L2= 2,2'-bipyridine(bpy), 4,4'-dimethyl-2,2'-bipyridine (Me2bpy)] are described. Their spectral and redox properties in aqueous solution were investigated. Evidence for each one electron redox process for the RuⅣ-RuⅢ and RuⅢ-RuⅡ couples has been obtained. Oxidation of [RuⅡ(bpp)(bpy)OH2]2+ with CeⅣ gave[RuⅣ(bpp)(bpy)O]2+. The RuⅣ= 0 complex is paramagnetic (μeff = 2.82) and the complexes [Ru(L3)(L2)OH2]2+ are robust catalysts for the oxidation of styrene, cyclohexene, and cyclooctene with cooxidant such as NaOCl. Product distributions and selectivities are discussed by varying the number of the substituted-methyl group in the ring.
Page	682 - 686
Full Text	PDF

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