Heptanuclear Cage CuII-Silsesquioxanes: Synthesis, Structure and Catalytic Activity

Two prismatic phenyl- (PhSiO1.5)14(CuO)7 (1, 29 % yield) and methyl- (MeSiO1.5)14(CuO)7 (2, 19 % yield) heptacoppersilsesquioxanes were obtained by the interaction of Cu,Na-based cage silsesquioxanes [(RSiO1.5)12(CuO)4(NaO0.5)4] (R = Ph, Me) with 4,4′-bipyridine and pyrazine, respectively, acting as “silent witness” ligands. Unusual molecular topologies of both compounds 1 and 2, which are the first representatives of cage silsesquioxanes with seven metal ions in their cores, were established by X-ray diffraction studies. Complex 1 was found to be an active precatalyst in the oxidation of alkanes and 1-phenylethanol to alkyl hydroperoxides and acetophenone, respectively. Alkanes were oxidized by hydrogen peroxide, and the alcohol was oxidized by tert-butyl hydroperoxide. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Authors
Bilyachenko A.N. 1, 2 , Levitsky M.M.1 , Korlyukov A.A. 1, 3 , Khrustalev V.N. 2 , Zubavichus Y.V.4 , Shul'pina L.S.1 , Shubina E.S.1 , Vologzhanina A.V.1 , Shul'pin G.B.5, 6
Journal
European Journal of Inorganic Chemistry
Publisher
Wiley-VCH Verlag
Number of issue
22
Language
English
Pages
2505-2511
Status
Published
Link
External link
DOI
10.1002/ejic.201701340
Volume
2018
Year
2018
Organizations
  • 1 Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str. 28, Moscow, 119991, Russian Federation
  • 2 Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklay Str. 6, Moscow, 117198, Russian Federation
  • 3 Pirogov Russian National Research Medical University, Ostrovitianov Str. 1, Moscow, 117997, Russian Federation
  • 4 National Research Center “Kurchatov Institute”, Akademika Kurchatova Pl. 1, Moscow, 123182, Russian Federation
  • 5 Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, Moscow, 119991, Russian Federation
  • 6 Plekhanov Russian University of Economics, Stremyannyi pereulok, dom 36, Moscow, 117997, Russian Federation
Keywords
Cage compounds; Copper; Homogeneous catalysis; Metallasilsesquioxanes; N ligands; Oxidation
Date of creation
19.10.2018
Date of change
19.10.2018
Short link
https://repository.rudn.ru/en/records/article/record/6589/
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