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

Molecules

Ismail Warad¹  Zeid Al-Othman¹  Saud Al-Resayes¹  Salem S. Al-Deyab¹ 

[1] ¹Department of Chemistry, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia ²Petrochemical Research Chair, Department of Chemistry, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia

关键词: Ru(II) complexes;    diphosphine;    hydrogenation;    solid state NMR;   

DOI  :  10.3390/molecules15021028

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.