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Stabilization of ArSiH4 and SiH62− Anions in Diruthenium Si[BOND]H σ-Complexes


  • Support for this research was provided by The National Science Foundation under Grant No. CHE-0957106. Support for the Molecular Graphics and Computational Facility is provided by the National Science Foundation under Grant No. CHE-0840505.


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Hydridosilicate anions ([ArSiH4] and [SiH6]2−) were stabilized as ligands in diruthenium Si[BOND]H σ-complexes [{(PhBPPh3)Ru}2(μ-Cl)(μ-η33-H4SiAr)] (Ar=2-MeOC6H4, Mes, Ph) and [{(PhBPPh3)Ru}2(μ-η44-H6Si)] (see picture). These complexes were formed under mild conditions and characterized by single-crystal X-ray diffraction (see picture), NMR and IR spectroscopy, and computational techniques.