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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
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 which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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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