Synthetic Route of 32993-05-8, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 32993-05-8, C41H35ClP2Ru. A document type is Article, introducing its new discovery.
Half-sandwich ruthenium(II) PTA complexes bearing the 1,2-dihydropentalenyl (C8H9-, Dp) and indenyl (C9H 7-, Ind) ancillary ligands have been synthesized and characterized using multinuclear NMR spectroscopy and X-ray crystallography. The complexes DpRu(PTA)(PPh3)Cl, DpRu(PTA)2Cl, IndRu-(PTA)(PPh3)Cl, and [IndRu(PTA)2(PPh3)]CI were obtained in good to excellent yields. The solid-state structures of these compounds exhibit piano stool geometries with eta5-coordination of the indenyl and dihydropentalenyl moieties. DpRu(PTA)2Cl is water-soluble (S25C = 43 mg/mL), while the mixed phosphine compounds are slightly soluble in acidic solutions. The Ru-H complexes, Cp?Ru(PTA)(PPh3)H (Cp? = Ind, Cp), have been synthesized in good yield and spectroscopically and structurally characterized. The ruthenium hydrides undergo an H/D exchange reaction with CD3OD with relative rates CpRu(PTA)-(PPh3)H ? IndRu(PTA)(PPh3)H > CpRu(PTA)2H. The air-stable Cp?Ru(PTA)(PR3)Cl complexes (Cp? = Cp, Dp, Ind; PR3 = PPh3 or PTA) exhibit activity in the regioselective transfer hydrogenation of alpha,beta-unsaturated carbonyls in aqueous media with HCOONa, HCOOH, or isopropanol/Na2CO3 serving as the hydrogen source. They were found to be effective in the selective reduction of the carbonyl functionality of cinnamaldehyde and the C=C bond of benzylidene acetone and chalcone. IndRu(PTA)(PPh3)Cl was less active than Cp?Ru(PTA)(PPh3)Cl (Cp? = Cp or Dp). Results of the transfer hydrogenation of unsaturated substrates using CpRu(PTA)(PPh 3)H are also reported.
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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI