Extracurricular laboratory:new discovery of Dichloro(benzene)ruthenium(II) dimer

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In an article, published in an article, once mentioned the application of 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer,molecular formula is C12H12Cl4Ru2, is a conventional compound. this article was the specific content is as follows.Computed Properties of C12H12Cl4Ru2

The cationic chloro complexes [(arene)Ru(H2N?NH 2)Cl]+ (1: arene = C6H6; 2: arene = p-MeC6H4iPr; 3: arene = C6Me6) have been synthesised from the corresponding arene ruthenium dichloride dimers and enantiopure (R1R or S1S) trans-1,2-diaminocyclohexane (H2N?NH2) and isolated as the chloride salts. The compounds are all water-soluble and, in the case of the hexamethylbenzene derivative 3, the aqua complex formed upon hydrolysis [(C6Me 6)Ru(H2N?NH2)-OH2]2+ (4) could be isolated as the tetrafluoroborate salt. The molecular structures of 3 and 4 have been determined by single-crystal X-ray diffraction analyses of [(C6Me6)Ru(H2N?NH2)Cl]Cl and [(C6Me6)Ru(H2N?NH2)OH 2][BF4]2. Treatment of [Ru2(arene) 2Cl4] with the monotosylated trans-1,2-diaminocyclohexane derivative (TsHN?NH2) does not yield the expected cationic complexes, analogous to 1-3 but the neutral deprotonated complexes [(arene)Ru(TsN?NH2)Cl] (5: arene = C6H6; 6: arene = p-MeC6H4iPr; 7: arene = C6Me 6; 8: arene = C6H5COOMe). Hydrolysis of the chloro complex 7 in aqueous solution gave, upon precipitation of silver chloride, the corresponding monocationic aqua complex [(C6Me 6)Ru(TsHN?NH2)(OH2)]+ (9) which was isolated and characterised as its tetrafluoroborate salt. The enantio-pure complexes 1-9 have been employed as catalysts for the transfer hydrogenation of acetophenone in aqueous solution using sodium formate and water as a hydrogen source. The best results were obtained (60C) with 7, giving a catalytic turnover frequency of 43 h-1 and an enantiomeric excess of 93 %. Wiley-VCH Verlag GmbH & Co. KGaA, 2005.

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Reference:
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI