Synthesis, characterization and reactivity of tetranuclear ruthenium hydrido clusters containing chiral phosphine ligands

Summary, in English

The chiral clusters [H4Ru4(CO)(12-n)(L)(n)] (n = 1, 2; L = NMDPP), 1,1-[H4Ru4(CO)(10)(L - L)] (L - L = DUPHOS, DIPAMP), 1,2-[H4Ru4(CO)(10)(DIOP)] and [{H4Ru4(CO)(10)(DIOP)}(2)] have been synthesized by derivatizing the parent carbonyl cluster [H4Ru4(CO)(12)] with the appropriate mono- or didentate chiral phosphine ligand. The phosphine-substituted clusters were found to be able to catalyze the ( asymmetric) hydrogenation of tiglic acid albeit with relatively low selectivity (enantiomeric excesses varying from 0 to 23%). It was found that the stability of the chiral ruthenium hydride clusters and the product distribution obtained in the catalytic reactions are dependent on the nature of the chiral phosphine. The crystal structures of [H4Ru4(CO)(12-n)(L)(n)] (n = 1, 2; L = NMDPP), 1,1-[H4Ru4(CO)(10)(L-L)] (L - L = DUPHOS, O-DUPHOS ( partially oxygenated ligand), DIPAMP), 1,2-[H4Ru4(CO)(10)(DIOP)] and [{H4Ru4(CO)(10)(DIOP)}(2)] are presented.

• Author: Viktor Moberg; Pertti Homanen; S Selva; Roger Persson; M Haukka; TA Pakkanen; M Monari; Ebbe Nordlander
• Department/s: Chemical Physics; Department of Chemistry
• Publishing year: 2006
• Language: English
• Pages: 279-288
• Publication/Series: Dalton Transactions
• Issue: 1
• Links: http://dx.doi.org/10.1039/b515273a
• Document type: Journal article
• Publisher: Royal Society of Chemistry
• Topic: Atom and Molecular Physics and Optics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1477-9234