Reference of 37366-09-9, Chemistry can be defined as the study of matter and the changes it undergoes. You’ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2. In a patent, introducing its new discovery.
Three series of heterodinuclear ruthenium-iron complexes have been synthesized from (eta6-arene)ruthenium dichloride dimers and phosphinoferrocene ligands containing glycine-based carboxamido substituents. The neutral complexes [(eta6-arene)RuCl2(Ph 2PfcCONHCH2CO2Me-kappaP)] (4, arene = benzene (a), p-cymene (b), hexamethylbenzene (c); fc = ferrocene-1,1?-diyl) were obtained by the bridge cleavage reaction of [(eta6-arene)RuCl 2]2 with Ph2PfcCONHCH2CO 2Me (1) in chloroform solution. The complex [(eta6-p- cymene)RuCl2(Ph2PfcCONHCH2CONH 2-kappaP)] (6b) was synthesized in the same way from Ph 2PfcCONHCH2CONH2 (3); the preparation of [(eta6-p-cymene)RuCl2(Ph2PfcCONHCH 2CO2H-kappaP)] (5b), featuring the ferrocene ligand in the free acid form (2), failed due to side reactions and isolation problems. The salts [(eta6-arene)RuCl(MeCN)(1-kappaP)][PF6] (7a-c) and [(eta6-arene)Ru(MeCN)2(1-kappaP)][PF 6]2 (8a-c) were prepared from 1 and the acetonitrile precursors [(eta6-arene)RuCl(MeCN)2][PF6] and from 4a-c via halide removal with Ag[PF6] in acetonitrile solution, respectively. Alternative synthetic routes to 7b and 8b were also studied. The compounds were fully characterized by elemental analysis, multinuclear NMR, IR, and electrospray ionization mass spectra, and their electrochemical properties were studied by cyclic voltammetry at a Pt-disk electrode. The single-crystal X-ray analyses of two representatives (4b and 8b) revealed a pseudotetrahedral coordination geometry at the ruthenium centers and eclipsed conformations of the ferrocene moieties, with the substituents at the two cyclopentadienyl rings being anti with respect to each other. All complexes showed high activity for the catalytic oxidation of secondary alcohols with tert-butyl hydroperoxide to give ketones in aqueous media. The most active catalyst was obtained from the neutral p-cymene complex 4b, showing a catalytic turnover frequency of 13 200 h-1 at room temperature for the oxidation of 1-phenylethanol at a substrate/catalyst ratio of 100 000.
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Reference:
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI