- Permethyl Manganates. Synthesis and Characterization of Divalent 2->, Trivalent 2->, and Tetravalent 2->
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The potential use of alkyl manganates in organic alkylation reactions and the need for high-valent organomanganese species to model the oxidation of organic substrates by high-valent manganese porphyrins has prompted us to study a series of permethyl manganates.We report the synthesis and characterizarion of the +> salts of 2->, 2->, and 2->.
- Morris, Robert J.,Girolami, Gregory S.
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- Formation of the cobalt hydrogenation catalysts at the action of lithium aluminum hydride and lithium tri(tert-butoxy)aluminohydride and their properties
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The interaction of Co(acac)2(3) with LiAlH4 or LiAlH(t-BuO)3 was studied using NMR, UV, IR, ESR spectroscopy, electron microscopy, and volumometry. The basic stages of formation of cobalt catalysts for hydrogenation were suggested. The formation of the nanoparticles that are active in the hydrogenation process is shown to occur at a ratio of reagents 5 ≤ Red/Co ≤ 12. The nanoparticles are stabilized by an excess of LiAlH4 or LiAlH(t-BuO)3, as well as by the products of their catalytic decomposition under the action of cobalt in the reduced state. At the ratio LiAlH4 / Co> 12 to obtain the particles active in catalysis their activation by a proton-donor compound is required.
- Schmidt, F. K.,Titova, Yu.,Umanets, V. A.,Khutsishvili, S. S.,Belykh, L. B.
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- Formation, nature of activity, and hydrogenation catalysis by nickel bis(acetylacetonate)-lithium tetrahydroaluminate systems
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A new approach to synthesis of nickel catalysts under the action of lithium tetrahydroaluminate was proposed which allows preparation of high-performance nanosized catalytic systems with well-reproducible properties. The major stages of formation and the
- Belykh,Titova,Rokhin,Shmidt
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p. 1911 - 1918
(2011/05/06)
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- Hydrogenation catalysts based on palladium bisacetylacetonate and lithium tetrahydroaluminate: Formation mechanism and reasons for modified effect of water
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Mechanism of formation, nature of activity, and properties of species active in hydrogenation catalysis in systems based on Pd(acac)2 and LiAlH4 were studied. The effect consisting in activation of catalytic systems was observed and
- Belykh,Titova,Rokhin,Belonogova,Shmidt
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p. 956 - 964
(2008/12/22)
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