Family of Penta- and Hexanuclear Metallasilsesquioxanes: Synthesis, Structure and Catalytic Properties in Oxidations Full article
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Journal of Organometallic Chemistry
ISSN: 0022-328X |
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Output data | Year: 2018, Volume: 867, Pages: 133-141 Pages count : 9 DOI: 10.1016/j.jorganchem.2017.10.033 | ||||||||||||
Tags | Alkanes, Catalysis, Complexes of copper, Nickel and cobalt, Functionalization of CH bonds, Metallasilsesquioxanes, Oxidation with hydrogen peroxide | ||||||||||||
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Abstract:
The deliberate synthesis of two types of prismatic cage-like metallasilsesquioxanes (hereinafter, referred to as CLMSs), viz., penta- and hexanuclear ones, is reported. It is shown that the size of the prismatic cage can be readily and reliably controlled by synthesis parameters. More specifically, the nuclearity shift from six, which is most common in CLMS chemistry (complexes 1–6, 8), to five, which is observed significantly more rarely, is achieved by applying pyridine as a key solvent/crystallization medium (complexes 7, 9–12). Structures of 1–12 were established by single-crystal X-ray diffraction. In sum, their composition could be described as [PhSiO1.5]12[CuO]6 (for hexanuclear products) or [RSiO1.5]10[MO]5 (R = Ph, Vin, M = Cu, Ni, Co for pentanuclear products). Compounds 7, 9–10 represent the rare examples of cage silsesquioxanes comprising pentagonal metalla-oxa rings of Cu(II) ions. The complex 10 is the very first observation of a co-crystal composed of different CLMS (i.e., two Co(II)5 and one Cu(II)5 prismatic cages). The compound 12 (Co5 cage with vinyl substituents at the silicon atoms) is the very first example of a pentanuclear CLMS-based coordination polymer. Complex 7 efficiently catalyzes oxidation of secondary alcohols to the corresponding ketones and alkanes to the corresponding alkyl hydroperoxides.
Cite:
Bilyachenko A.N.
, Kulakova A.N.
, Shul'pina L.S.
, Levitsky M.M.
, Korlyukov A.A.
, Khrustalev V.N.
, Zubavichus Y.V.
, Dorovatovskii P.V.
, Tsareva U.S.
, Shubina E.S.
, Petrov A.A.
, Vorontsov N.V.
, Shul'pin G.B.
Family of Penta- and Hexanuclear Metallasilsesquioxanes: Synthesis, Structure and Catalytic Properties in Oxidations
Journal of Organometallic Chemistry. 2018. V.867. P.133-141. DOI: 10.1016/j.jorganchem.2017.10.033 WOS Scopus РИНЦ ANCAN OpenAlex
Family of Penta- and Hexanuclear Metallasilsesquioxanes: Synthesis, Structure and Catalytic Properties in Oxidations
Journal of Organometallic Chemistry. 2018. V.867. P.133-141. DOI: 10.1016/j.jorganchem.2017.10.033 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Submitted: | Sep 1, 2017 |
Accepted: | Oct 24, 2017 |
Published online: | Oct 28, 2017 |
Published print: | Jul 15, 2018 |
Identifiers:
Web of science: | WOS:000433256800020 |
Scopus: | 2-s2.0-85032982227 |
Elibrary: | 35476584 |
Chemical Abstracts: | 2017:1782491 |
Chemical Abstracts (print): | 168:505501 |
OpenAlex: | W2767027060 |