Paramagnetic (1,3-diborolyl)ruthenium triple-decker complexes and transformation into diamagnetic complexes having bridging 1,3-diborafulvene ligands

The paramagnetic triple-decker complexes [(Cp*Ru)2μ-(CMe)3(BCl)(BMe)] (3b) and [(Cp*Ru)2μ-(CMe)3(BCl)2] (3c) are formed by refluxing a mixture of [Cp*RuCl]4 and pentamethyl-2,3-dihydro-1,3-diborole in thf. In CH2Cl2 under air complex 3b slowly looses a hydrogen atom with formation of the diamagnetic...

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Hauptverfasser: Mutseneck, Elena V. (VerfasserIn) , Wadepohl, Hubert (VerfasserIn) , Enders, Markus (VerfasserIn) , Kudinov, Alexander R. (VerfasserIn) , Siebert, Walter (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2010
In: European journal of inorganic chemistry
Year: 2010, Heft: 19, Pages: 2911-2918
ISSN:1099-0682
DOI:10.1002/ejic.200901232
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1002/ejic.200901232
Verlag, lizenzpflichtig, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/ejic.200901232
Volltext
Verfasserangaben:Elena V. Mutseneck, Hubert Wadepohl, Markus Enders, Alexander R. Kudinov, and Walter Siebert

MARC

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520 |a The paramagnetic triple-decker complexes [(Cp*Ru)2μ-(CMe)3(BCl)(BMe)] (3b) and [(Cp*Ru)2μ-(CMe)3(BCl)2] (3c) are formed by refluxing a mixture of [Cp*RuCl]4 and pentamethyl-2,3-dihydro-1,3-diborole in thf. In CH2Cl2 under air complex 3b slowly looses a hydrogen atom with formation of the diamagnetic triple-decker [(Cp*Ru)2μ-η5:η6-(CMe)3(BCl)(BCH2)] (4b) with the unsymmetrical dihydrodiborafulvene derivative in a bridging position. The analogous complex [(Cp*Ru)2μ-η5:η6-(CMe)3(BMe)-(BCH2)] (4a) is obtained by interaction of HCl with the triple-decker [(Cp*Ru)2μ-(CMe)3(BMe)2] (3a). According to calculations, complexes 4a and 4b have an almost non-distorted triple-decker arrangement with a strong bending of the B=CH2 group toward one of the Ru atoms. For the formation of 3b and 3c the chloro-containing sandwich complexes [Cp*Ruη5-(CMe)3(BCl)(BR1)] (2b,c; R1 = Me, Cl) are proposed as intermediates. The constitutions of the complexes are derived from NMR, MS and DFT data, and the molecular structure of 3b is confirmed by an X-ray diffraction analysis. 
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