In this talk I will discuss new approaches to achieve fast hydride generation using metal carbonyl clusters containing more than 10 metal ions, and that have delocalized bonding and electronic structures that can serve as models for the regime of nanoparticle and heterogeneous catalysts. The intermediate size of these clusters, between molecules and nanoparticles, preserves access to the powerful characterization tools of molecular chemistry to enable a thorough characterization of structures and reactivity using tools such as single crystal X-ray diffraction and cyclic voltammetry (CV). The kinetics of heterogeneous electron transfer, diffusion properties, and reactivity with protons and CO will be presented to benchmark physical properties. Analysis using CV has revealed rates for H2 evolution of 105 s-1, and a reaction mechanism where protonation and hydride migration events on the cluster core are coupled with electron transfer events.

Metal carbonyl clusters as catalysts for fast H2 evolution

2019 Fall National Meeting

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