725232-85-9Relevant academic research and scientific papers
Monocyclopentadienylhydride derivatives of ruthenium: Stereoselective proton transfer and proton-hydride exchange in an extremely short dihydrogen bond
Cayuela, Ester,Jalon, Felix A.,Manzano, Blanca R.,Espino, Gustavo,Weissensteiner, Walter,Mereiter, Kurt
, p. 7049 - 7062 (2007/10/03)
Diastereomerically pure complexes of formula CpRuCl(PP*) and CpRuH(PP*) with chiral ferrocenyl diphosphines were prepared and the selectivity of proton-transfer processes over the monohydride compounds with different acids was studied. With 1 equiv of HBF4 the cis-dihydrogen and trans-dihydride complexes were formed while with 3 equiv of CF 3CO2H the trans-dihydride derivative was the only product. However, the use of 1 equiv of CF3CO2H led to a dihydrogen bonded complex with an extremely short RuH...HO 2CF3 interaction that exhibits proton-hydride exchange. Using the labeled acid CF3CO2D, a stereoselective transference of the deuteron was demonstrated that implies the previous epimerization of the monohydride and the subsequent attack of the acid in the position previously occupied by the hydride.
