Department of Chemistry, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia.
Molecules. 2010 Feb 23;15(2):1028-40. doi: 10.3390/molecules15021028.
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 (1)H-, (13)C- and (31)P-NMR spectroscopy. Due to a lack of solubility the structures of xerogel 3 and modified 4 were studied by solid state (13)C-, (29)Si- and (31)P-NMR spectroscopy, infrared spectroscopy and EXAFS. These materials were stable enough to serve as hydrogenation catalysts. Selective hydrogenation of functionalized carbonyls in alpha,beta-unsaturated compounds was successfully carried out under mild conditions in a basic medium using these complexes as catalysts.
新型 Ru(II) 配合物基杂化无机-有机材料通过二胺共配体位点而不是传统的双膦配体固定化。通过两种不同的方法制备了配合物：溶胶-凝胶法和表面修饰技术。通过元素分析、红外、FAB-MS 和 (1)H-、(13)C-和 (31)P-NMR 光谱等多种可用的物理测量方法推导出所需材料的结构。由于缺乏溶解性，通过固态 (13)C-、(29)Si-和 (31)P-NMR 光谱、红外光谱和 EXAFS 研究了干凝胶 3 和修饰的 4 的结构。这些材料足够稳定，可以用作氢化催化剂。在碱性介质中，使用这些配合物作为催化剂，在温和条件下成功地对α，β-不饱和化合物中的功能化羰基进行了选择性氢化。
