On the lability of dimethylsulfoxide (DMSO) coordinated to the {Ru-II-NO+} species: X-ray structures of mer-[RuCl3(DMSO)(2)(NO)] and mer-[RuCl3(CD3CN)(DMSO)(NO)]

摘要

The syntheses of nitrosyl-dimethylsulfoxide-ruthenium(II) complexes with general formula mer-[RuCl3(L)(DMSO)(NO)] (L = DMSO or CD3CN) is reported. The mer-[RuCl3(DMSO)(2)(NO)] (1) complex was obtained from the reaction of [RuCl3(NO)] with the sulfoxide ligand in acetone. The mer-[RuCl3(CD3CN)(DMSC)(NO)] (2) compound was obtained from mer-[RuCl3(DMSO)(2)(NO)] maintained in deuterated acetonitrile. These data suggest a slow kinetic reaction due the low lability of the DMSO ligand coordinated to the {Ru-II-NO+} species. The crystal and molecular structures of (1) and (2) have been determined from X-ray studies. Crystal data: for (1), monoclinic, P2(1)/c, a = 8.8340(2) Angstrom, b = 12.0230(3) Angstrom, c = 13.7064(4) Angstrom, beta = 114.546(2)degrees, Z = 4, R1 = 0.0429 for (2), monoclinic, P21, a = 10.0180(7) Angstrom, b = 9.5070(7) Angstrom, c = 13.3340(9) Angstrom, beta = 102.264(4)degrees, Z = 4, R1 = 0.0472. The spectroscopic characterization of (1), in solid state (infrared spectrum) and in solution (nuclear magnetic resonance and cyclic voltammetry) is also described.