Molecular metal clusters provide unique possibilities at halfway between mononuclear systems and metal surfaces. They often exhibit otherwise unattainable reactivity modes, and many have shown outstanding catalytic properties. More recently molecular clusters have been employed as nanoscale atoms to build well-defined 3D solids (supramolecular intercluster compounds and a variety of ionic solids) with unprecedented physicochemical properties. We are currently investigating the reactivity of novel transition metal clusters, as well their heterogenized versions, with the aim of developing catalytic cycles.
See for example:
- Sharninghausen, L. S.; Mercado, B. Q.; Crabtree, R. H.; Balcells, D.;* Campos, J.* Gel Matrices for the Crystallization of [Ir4(IMe)7(CO)H10]2+ and [Ir4(IMe)8H9]3+ clusters derived from Catalytic Glycerol Dehydrogenation, Dalton Trans. 2015, 44, 18403.
- Sharninghausen, L. S.; Mercado, B.; Hoffmann, C.; Wang, X.; Campos, J.*; Crabtree, R. H.*; Balcells, D.* The Neutron Diffraction Structure of [Ir4(IMe)8(H)10]2+ Polyhydride Cluster: Testing the Computational Hydride Positional Assignments, J. Organomet. Chem. 2017, 849-850, 17.
- Campos, J.*; Sharninghausen, L. S.; Crabtree, R. H.*; Balcells, D.*, A Carbene-Rich but Carbonyl-Poor [Ir6(IMe)8(CO)2H14]2+ Polyhydride Cluster as a Deactivation Product from Catalytic Glycerol Dehydrogenation, Angew. Chem. Int. Ed. 2014, 53, 12808.