Structure, Stereochemistry and Dynamics of Tetranuclear Polyhydride Clusters Containing Chiral Heterobidentate Phosphanes
作者:Vadim I. Ponomarenko、Dmitrii V. Krupenya、Elena V. Grachova、Vladimir A. Gindin、Stanislav I. Selivanov、Igor O. Koshevoy、Sergey P. Tunik、Matti Haukka、Jouni Pursiainen、Päivi Pirilä
DOI:10.1002/zaac.200900259
日期:2009.8.11
X-ray crystallography in solid state and by a variety of multinuclear NMR spectroscopic measurements in solution. In all studied clusters the coordinated ligands form five-membered chelate rings through phosphorus and nitrogen atoms of oxazoline moiety to afford a novel chiral center associated with the substituted metal atom. The substitution reactions demonstrate extremely high stereoselectivity, which
Reaction of chiral pyrrolylphosphine with polynuclear carbonyl complexes of osmium and rhodium
作者:V. I. Ponomarenko、E. V. Gracheva、I. O. Koshevoi、V. A. Gindin、S. P. Tunik、I. Pursiainen、M. Haukka
DOI:10.1134/s1070363210030060
日期:2010.3
Reactions of labile Os3(CO)10(NCMe)2 and Rh6(CO)15(NCMe) clusters and dinuclear Rh2(CO)4Cl2 complex with chiral (S)-[2-(4-isopropyl-4,5-dihydro-1,3-oxazol-2-yl)phenyl]di(1H-pyrrol-1-yl)phosphine were studied. The reaction of Os3(CO)10(NCMe)2 with the chiral phosphine was diastereoselective, and it afforded only one diastereoisomer with ee 100%. All isolated compounds were completely characterized by