Characterization of Ru(CO) sub x species on silica with sup 13 C NMR spectroscopy

摘要: The nature and dynamics of Ru multicarbonyl sites (Ru(CO){sub x}) are studied through a series {sup 13}C NMR experiments. Interpretation the spectra suggests two types multicarbonyls: motionally averaged species that produce narrow Lorentzian line immobile broad powder pattern characteristic linearly bonded CO. Evolution CO site distributions, primarily conversion mobile to rigid multicarbonyls, is observed with aging samples.