Osmium: Inorganic & Coordination Chemistry

The general features and coordination chemistry of Os are discussed in the context of the use of different ligand types to stabilize complexes of Os^VIII through to Os^–II. The complexation chemistry with cyanide, N-, P-, O-, S-, and halide-donor ligands is detailed. The asymmetric dihydroxylation and aminohydroxylation of alkenes, general coordination chemistry with macrocyclic and open chain ligands, porphyrin complexes, photophysical properties and electrochemistry of Os^II complexes of heterocyclic ligands and comparisons to their Ru^II analogues, and electron transfer in heterobimetallic and dendrimer complexes of Os^II are all highlighted.

Keywords: oxo complexes; asymmetric catalysis; electrochemistry; electron transfer; macrocyclic ligands; porphyrins; heterobimetallic complexes; supramolecular chemistry