Synthesis and characterization of nitrosyl complexes containing 4,6-dimethyl-pyrimidine-2-thiolato (‘SpymMe2’) as ligand: [Ru(‘SpymMe2’,-N,-S) (‘SpymMe2’,-S)(NO)(P–P)](PF6) (P–P = 1,2-bis(diphenylphosphino)ethane or 1,2-bis(diphenylphosphino)ethylene: X-r

The reaction products of fac-[RuCl3(NO)(P–P)], [P–P = dppe (1) and c-dppen (2)] with the 4,6-dimethyl-2-mercaptopyrimidine ligand in methanol are the correspondent nitrosyl derivatives [Ru(‘SpymMe2’,-N,-S)(‘SpymMe2’,-S)(NO)(P–P)](PF6). These are the first reported ruthenium complexes containing both, nitrosyl and a pyrimidinethiol derivative. The X-ray crystal structure of complex 1 is reported. The intense νNO bands in the IR spectra (KBr pellets) of complexes 1 and 2 are at 1850 and 1860 cm−1, respectively. The cyclic voltammetry of both complexes shows two reduction waves centered at the NO+ ligand.