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Issue 24, 2017
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Carbene stabilized interconnected bis-germylene and its silicon analogue with small methyl substituents

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Abstract

The cyclic alkyl(amino) carbene (cAAC) [:C{N-C6H3(2,6-IPr2)}(CMe2)2CH2] stabilized MeGeGeMe has been isolated in the molecular form with composition (cAAC)MeGe–GeMe(cAAC) (1) at room temperature. Compound 1 was synthesized from the reduction of MeGeCl3 using three equivalents of KC8 in the presence of one equivalent of cAAC. The corresponding silicon compound (cAAC)MeSi–SiMe(cAAC) (2) was also prepared. Compounds 1 and 2 are the first examples of REER compounds (E = Ge, Si) carrying the smallest organic group. Furthermore the structures of compounds 1 and 2 have been investigated by using theoretical methods. The theoretical analysis of the structure of 1 is in agreement with the formation as an unprecedented carbene stabilized bis-germylene whereas compound 2 can be equally described as carbene stabilized bis-silylene with coordinate bonds as with classical double bonds of a 2,3-disila-1,3-butadiene. The compounds were also characterized by X-ray crystallography.

Graphical abstract: Carbene stabilized interconnected bis-germylene and its silicon analogue with small methyl substituents

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Publication details

The article was received on 17 May 2017, accepted on 26 May 2017 and first published on 26 May 2017


Article type: Paper
DOI: 10.1039/C7DT01796K
Citation: Dalton Trans., 2017,46, 7947-7952
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    Carbene stabilized interconnected bis-germylene and its silicon analogue with small methyl substituents

    S. Kundu, P. P. Samuel, A. Luebben, D. M. Andrada, G. Frenking, B. Dittrich and H. W. Roesky, Dalton Trans., 2017, 46, 7947
    DOI: 10.1039/C7DT01796K

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