Transition metal sulfoxide complex

S-bonded sulfoxides are only found for soft metal centers, such as Ru(II).

Being a polar solvent with a high dielectric constants, dmso dissolves many metal salts to give the corresponding complexes.

Several homoleptic octahedral complexes of sulfoxides have been characterized by X-ray crystallography.

The tricationic complex in [Rh(dmso)6](O3SCF3)3 features one S-bonded and five O-bonded sulfoxide ligands.

[10] The complex [Cu(Ph2SO)4]2+ is square planar, in contrast to the derivative with dmso ligands.

The square planar d8 complex [Rh(dmso)4]+ features a pairs of S- and O-bonded sulfoxide ligands.