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Catalysts 2018, 8(10), 484;

Cu42Ge24Na4—A Giant Trimetallic Sesquioxane Cage: Synthesis, Structure, and Catalytic Activity

A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova, 28, Moscow 119991, Russia
People’s Friendship University of Russia, ul. Miklukho-Maklaya, dom 6, Moscow 117198, Russia
National Research Center “Kurchatov Institute”, pl. Akademika Kurchatova, dom 1, Moscow 123182, Russia
Institut des Biomolécules Max Mousseron (IBMM) UMR 5247, CNRS, Université de Montpellier, ENSCM, Université de Montpellier Campus Triolet Place Eugène Bataillon, 34095 Montpellier CEDEX 5, France
Semenov Institute of Chemical Physics, Russian Academy of Sciences, Ulitsa Kosygina, dom 4, Moscow 119991, Russia
Chair of Chemistry and Physics, Plekhanov Russian University of Economics, Stremyannyi pereulok, dom 36, Moscow 117997, Russia
Authors to whom correspondence should be addressed.
Received: 18 September 2018 / Revised: 12 October 2018 / Accepted: 16 October 2018 / Published: 22 October 2018
(This article belongs to the Section Catalytic Materials)
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Unprecedented germanium-based sesquioxane exhibits an extremely high nuclearity (Cu42Ge24Na4) and unusual encapsulation features. The compound demonstrated a high catalytic activity in the oxidative amidation of alcohols, with cost-effective catalyst loading down to 400 ppm of copper, and in the oxidation of cyclohexane and other alkanes with H2O2 in acetonitrile in the presence of nitric acid. Selectivity parameters and the mode of dependence of initial cyclohexane oxidation rate on initial concentration of the hydrocarbon indicate that the reaction occurs with the participation of hydroxyl radicals and alkyl hydroperoxides are formed as the main primary product. Alcohols have been transformed into the corresponding ketones by the catalytic oxidation with tert-butyl hydroperoxide. View Full-Text
Keywords: alkanes; amides; hydrogen peroxide; multinuclear complexes; iron complexes; metallasiloxanes alkanes; amides; hydrogen peroxide; multinuclear complexes; iron complexes; metallasiloxanes

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Kulakova, A.N.; Bilyachenko, A.N.; Khrustalev, V.N.; Zubavichus, Y.V.; Dorovatovskii, P.V.; Shul’pina, L.S.; Bantreil, X.; Lamaty, F.; Shubina, E.S.; Levitsky, M.M.; Shul’pin, G.B. Cu42Ge24Na4—A Giant Trimetallic Sesquioxane Cage: Synthesis, Structure, and Catalytic Activity. Catalysts 2018, 8, 484.

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