Cryo IR Spectroscopy of N2 and H2 on Ru8+: The Effect of N2 on the H-Migration

We present the cryo IR-PD spectra of the coadsorbed [Ru₈(H₂)₁(N₂)₄]⁺ and [Ru₈(N₂)₄(H₂)₁]⁺ species differing in the adsorption sequence of H₂ and N₂, which we record via application of tandem cryo ion trapping. We observe strong evidence for dissociative H₂ adsorption, and the spectra reveal differences in the Ru-H stretching region, which we assign to distal and proximal hydrogen atom locations on the Ru₈⁺ cluster, their migration likely hindered by preloaded nitrogen molecules and unaffected by subsequent N₂ adsorption.

pH controlled adsorption of water-soluble ruthenium clusters onto carbon nanotubes and nanofiber surfaces

Nanocarbon supported catalysts were prepared from water-soluble molecular clusters by pH controlled impregnations in order to probe the clusters/surface interactions and to maximize them.