Tuning the Reactivities of Ruthenium-Oxo Complexes with Robust Ligands. A Ruthenium(IV)-Oxo Complex of 6,6'-Dichloro-2,2'-bipyridine as an Active Oxidant for Stoichiometric and Catalytic Organic Oxidation

DOI: 10.1039/DT9910001901

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1901 - 1908 (1991)

Update date:2022-08-18

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Authors:

Che, Chi-Ming

Ho, Clare

Lau, Tai-Chu

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Article abstract of DOI:10.1039/DT9910001901

The synthesis and characterization of II(terpy)(dcbipy)(H2O)>²⁺ (terpy = 2,2':6',2"-terpyridine; dcbipy = 6,6'-dichloro-2,2'-bipyridine) are described.Oxidation of this complex with Ce^IV gave IV(terpy)(dcbipy)O>²⁺, isolated as a greenish yellow perchlorate salt.The Ru^IV=O complex is paramagnetic (μ_eff =2.83) and exhibits a Ru=O stretch at 780 cm^1-.It is powerful oxidant with E⁰(Ru^IV-Ru^III) = 1.13 V vs. saturated calomel electrode at pH 1.0 and can selectively oxidize the tertiary C-H bond of adamantane.The mechanism of alkene oxidation by Ru^IV=O has been investigated and discussed.The complex II(terpy)(dcbipy)(H2O)>²⁺ is a robust catalyst for the oxidation of saturated alkanes by tert-butyl hydroperoxide.