Chemistry - A European Journal" 23, 296-303 (2017) - Frontispiece

Iron(II), cobalt(II), and zinc(II) silylene complexes: reaction of the silylene [i(PrNC(NiPr2)NiPr2]Si with FeBr2, CoBr2, NiBe2 MeOCH2CH2OMe, ZnCl2, and ZnBr2

Authors: Johannes A. Baus, Dr. Felix M. Mück, Heidi Schneider, Prof. Dr. Reinhold Tacke

Link:  onlinelibrary.wiley.com/doi/10.1002/chem.201780263/full

Chem. Eur. J. 23, 296-303 (2017). more ... 

Abstract:

Donor-Stabilized Silylenes The chemistry of donor-stabilized silylenes has developed into one of the most actively studied research areas in molecular silicon chemistry. In their Full Paper on page 296 ff., R. Tacke et al report on the synthesis and characterization of novel transition-metal silylene complexes of FeBr2, CoBr2, NiBr2, ZnBr2, and ZnCl2 with the bis(guanidinato)silicon(II) complex [iPrNC(NiPr2)NiPr]2Si. These compounds represent very rare examples of carbonyl-free silylene complexes of 3d transition metals in the formal oxidation state +2.

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Volume 2017, Issue 1 (January 3, 2017), Pages 186–191 

Silylene-Induced Reduction of [Mn2(CO)10]: Formation of a Five-Coordinate Silicon(IV) Complex with an O-Bound [(OC)4Mn=Mn(CO)4]2– Ligand

Authors:

Johannes A. Baus, Jordi Poater, F. Matthias Bickelhaupt and Reinhold Tacke

DOI: 10.1002/ejic.201600913

 

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Abstract:

Based on a new silylene-induced reduction of [Mn2(CO)10], a five-coordinate silicon(IV) complex was synthesized, which is formally built up by an anionic [(OC)4Mn=Mn(CO)4]2– and a cationic {[iPrNC(NiPr2)NiPr]2Si}2+ fragment, which are connected by a nearly linear Si–O–C moiety. The Si–O and the C–O bond of this Si–O–C moiety display partial double-bond character.

 

Dalton Transactions 2017, Advance Article

DOI: 10.1039/C6DT03264H,  Received 18 Aug 2016, Accepted 27 Sep 2016
First published online 07 Oct 2016

DOI: 10.1039/c6dt03264h   read more ...

 

Neutral six-coordinate bis(dithiocarbamato)-silicon(IV) complexes with an SiCl2S4 skeleton

Dr. Johannes A. Baus and Prof. Dr. Reinhold Tacke

Graphical abstract: Neutral six-coordinate bis(dithiocarbamato)silicon(iv) complexes with an SiCl2S4 skeleton

 


Abstract

Treatment of SiCl4 with lithium dithiocarbamates of the formula type Li[R2NCS2] (R = Ph, iPr) in a molar ratio of 1 : 2 afforded the respective six-coordinate silicon(IV) complexes [Ph2NCS2]2SiCl2 (3) and [iPr2NCS2]2SiCl2 (4), which were isolated as the solvates 3·MeCN and 4·MeCN. Compounds 3·MeCN and 4·MeCN were structurally characterised by single-crystal X-ray diffraction and multinuclear NMR spectroscopic studies in the solid state and in solution. In this study, dithiocarbamato ligands were implemented in silicon coordination chemistry for the first time. Compounds 3 and 4 represent the first six-coordinate silicon(IV) complexes with an SiCl2S4 skeleton.

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