SYNTHETIC COLLOQUIUM | Symmetry Making and Breaking in Seeded Growth of Metal Nanocrystals

Crystal growth theory predicts that heterogeneous nucleation will occur preferentially at defect sites, such as the vertices rather than the faces of shape-controlled seeds. Platonic metal solids are generally assumed to have vertices with nearly identical chemical potentials, and also nearly identical faces, leading to the useful generality that heterogeneous nucleation preserves the symmetry of the original seeds in the final product.

Using N-Heterocyclic Olefins (NHOs) and Frustrated Lewis Pairs (FLP) to Promote Small Molecule Activation and Nanomaterial Deposition in the Main Group

ABSTRACT

This presentation will describe our recent application of Frustrated Lewis Pairs (FLPs) to gain access to inorganic methylene EH2 complexes (E = Group 14 element) and their use to deposit bulk metal films from solution.[1] This will be followed by a highlight of our studies on anionic N-heterocyclic olefin (NHO) ligands, leading to rare examples of acyclic two-coordinate silylenes (R2Si:). I will also describe the ability of our silylenes to activate strong homo- and heteroatomic bonds under mild conditions.[2]

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