Preparation And Property Investigations Of Function Model Complex Precursor Of [NiRu]-hydrogenase

Hydrogen has become the focus of many scientists as the great potential of renewablegreen energy. Especially, Hydrogenases which have the function of cleavage of hydrogenarouse the attention of researchers, and the synthetic model compounds with similarfunctions by artificial simulation that become one of the important branches. The main workof this paper is [Ru] precursor composition of [NiRu]hydrogenase function model compoundby macromolecule design，the structure of the compound is not only unchanged in the water,but also is stability under acidic condition(1＜pH＜8); this will provide material foundationfor the preparation of stable hydrogenase funtion model compound at broader pH values. Atthe same time, the catalytic reactivity for Mukaiyama-Aldol and Michael reaction for thecompound in aqueous media was studied, the method proved that the compound can act as aLewis acid catalyst for the reaction.In the first place, in this paper, a water-soluble Organoruthenium natrite complex with a2-(pentamethylbenzyl) pyridine (Bz^py) ligand was synthesized. The synthesis method wasconfirmed, which was proceed from the simple raw material, milder conditions and conciseprocedure. Firstly, I synthesized ligand Bz^py with pyridine,next, I obtainedOrganoruthenium complex [RuIICl2(Bz^py)] containing Bz^py ligand by the Bz^py ligandand the Ruthenium trichloride reactions, once more,the right silver was choosed to reaction,and Organoruthenium complex containing nitrate molecule was finally prepared. Thecompounds were characterized by FTIR,1HNMR, ESI-MS and a single crystal X-raydiffraction methods.Secondly, the stability and activity of the freshly prepared model compound precursorwas studied, and structural stability for the compound at different pH levels and reactivitybetween the compounds, H2and NaBH4in water were tested.At last, the catalytic reactivity of the freshly prepared model compound precursor in theMukaiyama-Aldol reaction in aqueous media was studied. The effects of different solvent、temperature and the amount of catalyst on the reaction were investigated.