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- W2078244920 abstract "The new binuclear oxothiolatorhenium(V) compound, Re2O2(mtp)3 (D1, mtpH2 = 2-mercaptomethylthiophenol) was found to be an efficient catalyst for oxygen-transfer reactions. Strong Lewis bases such as phosphines coordinate to one of the rhenium centers in D1; we suggest that this opens one of the Re−S bridges. Dialkylsulfides coordinate weakly to D1. Alkylarylsulfides, diarylsulfides, triphenylarsine and triphenylstibine, and dienes and alkenes do not coordinate to D1. D1 catalyzes the oxidation of phosphines, arsines, stibenes, sulfides, and dienes by pyridine N-oxides and catalyzes the oxidation of phosphines by dimethyl sulfoxide. The kinetics and mechanism for the oxidation of triarylphosphines by pyridine N-oxides were investigated. The relative reactivities of all substrates were studied by competitive reactions. The order was found to be phosphine > arsine > stibene > sulfide > diene. The reaction is proposed to go through a Re(VII) intermediate with pyridine N-oxide as one of the ligands. The N−O bond was activated through coordination to rhenium, and the oxygen atom was abstracted by a phosphine forming a phosphine oxide." @default.
- W2078244920 created "2016-06-24" @default.
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- W2078244920 date "2001-02-01" @default.
- W2078244920 modified "2023-09-23" @default.
- W2078244920 title "Mechanistic Study of Oxygen-Transfer Reaction Catalyzed by an Oxorhenium(V) Compound" @default.
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- W2078244920 doi "https://doi.org/10.1021/ic000854k" @default.
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