Matches in SemOpenAlex for { <https://semopenalex.org/work/W2124307215> ?p ?o ?g. }
- W2124307215 endingPage "4685" @default.
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- W2124307215 abstract "Two new tetranuclear chalcocyanide cluster complexes, [{Mn(saloph)H2O}4Re4Q4(CN)12]⋅4 CH3OH⋅ 8 H2O (saloph=N,N′-o-phenylenebis(salicylidenaminato), Q=Se (1-Se), Te (2-Te)), have been synthesized by the diffusion of a methanolic solution of [PPh4]4[Re4Q4(CN)12] into a methanolic solution of [Mn(saloph)]+. The structure of 2-Te has been determined by X-ray crystallography. These rhenium cluster-supported [MnIII(saloph)] complexes have been found to efficiently catalyze a wide range of olefin epoxidations under mild experimental conditions in the presence of meta-chloroperbenzoic acid (mCPBA). Olefin epoxidation by these catalysts is proposed to involve the multiple active oxidants MnVO, MnIVO, and MnIIIOOC(O)R. Evidence in support of this interpretation has been derived from reactivity and Hammett studies, H218O-exchange experiments, and the use of peroxyphenylacetic acid as a mechanistic probe. Moreover, it has been observed that the participation of MnVO, MnIVO, and MnIIIOOC(O)R can be controlled by changing the substrate concentration. This mechanism provides the greatest congruity with related oxidation reactions that employ certain Mn complexes as catalysts." @default.
- W2124307215 created "2016-06-24" @default.
- W2124307215 creator A5002403713 @default.
- W2124307215 creator A5021787719 @default.
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- W2124307215 creator A5086757509 @default.
- W2124307215 creator A5088131160 @default.
- W2124307215 creator A5090364028 @default.
- W2124307215 date "2010-04-19" @default.
- W2124307215 modified "2023-10-01" @default.
- W2124307215 title "Efficient Olefin Epoxidation by Robust Re<sub>4</sub>Cluster-Supported Mn<sup>III</sup>Complexes with Peracids: Evidence of Simultaneous Operation of Multiple Active Oxidant Species, Mn<sup>V</sup>O, Mn<sup>IV</sup>O, and Mn<sup>III</sup>OOC(O)R" @default.
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