Organoruthenium chemistry

[8][9] NHC ligands can be prepared with precise steric and electronic parameters, and can be chiral for use in asymmetric catalysis.

Shvo catalyst ([Ph4(η5-C4CO)]2H]}Ru2(CO)4(μ-H)) is also coordinatively saturated, but features reactive OH and RuH groups that enable it to function in transfer hydrogenation.

One example of an Ru-arene complex is (cymene)ruthenium dichloride dimer, which is the precursor to a versatile catalyst for transfer hydrogenation.

The compounds studied include di-, tri-, and tetra-nuclear complexes and tetrara-, hexa-, and octa- metalla-cages.

[16] Thus, osmium tetroxide is an important oxidizing agent in organic chemistry especially in the conversion of alkenes to 1,2-diols.

Thus, π backbonding to alkenes and CO is stronger for Os compounds, which leads to more stable organic derivatives.

The phosphine complexes are analogous to those or ruthenium, but hydride derivatives, e.g. OsHCl(CO)(PPh3)3, tend to be more stable.