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Molecules 2010, 15(2), 1028-1040; doi:10.3390/molecules15021028
Article

Synthesis and Characterization of Novel Inorganic-Organic Hybrid Ru(II) Complexes and Their Application in Selective Hydrogenation

1,* , 1, 1, 2 and 2
1 Department of Chemistry, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia 2 Petrochemical Research Chair, Department of Chemistry, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
* Author to whom correspondence should be addressed.
Received: 31 December 2009 / Revised: 21 January 2010 / Accepted: 18 February 2010 / Published: 23 February 2010
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Abstract

Novel Ru(II) complex-based hybrid inorganic-organic materials immobilized via a diamine co-ligand site instead of the conventional diphosphine ligand have been prepared. The complexes were prepared by two different methods: sol-gel and surface modification techniques. The structures of the desired materials were deduced by several available physical measurements like elemental analyses, infrared, FAB-MS and 1H-, 13C- and 31P-NMR spectroscopy. Due to a lack of solubility the structures of xerogel 3 and modified 4 were studied by solid state 13C-, 29Si- and 31P-NMR spectroscopy, infrared spectroscopy and EXAFS. These materials were stable enough to serve as hydrogenation catalysts. Selective hydrogenation of functionalized carbonyls in a,b-unsaturated compounds was successfully carried out under mild conditions in a basic medium using these complexes as catalysts.
Keywords: Ru(II) complexes; diphosphine; hydrogenation; solid state NMR Ru(II) complexes; diphosphine; hydrogenation; solid state NMR
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Warad, I.; Al-Othman, Z.; Al-Resayes, S.; Al-Deyab, S.S.; Kenawy, E.-R. Synthesis and Characterization of Novel Inorganic-Organic Hybrid Ru(II) Complexes and Their Application in Selective Hydrogenation. Molecules 2010, 15, 1028-1040.

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