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

Abstract

The reaction products of fac-[RuCl 3(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(‘SpymMe 2’,- N,- S)(‘SpymMe 2’,- S)(NO)(P–P)](PF 6). 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 ν NO 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.