On the lability of dimethylsulfoxide (DMSO) coordinated to the [Ru(II)-NO(+)] species: X-ray structures of mer-[RuCl(3)(DMSO)(2)(NO)] and mer-[RuCl(3)(CD(3)CN)(DMSO)(NO) |
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Authors: | Paula Q A Batista A A Castellano E E Ellena J |
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Institution: | a Departamento de Química, Universidade Federal de São Carlos, C. P. 676, 13565-905, São Carlos, SP, Brazil b Instituto de Física de São Carlos, Universidade de São Paulo, C. P. 369, 13560-905, São Carlos, SP, Brazil |
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Abstract: | 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)(DMSO)(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 {RuII–NO+} species. The crystal and molecular structures of (1) and (2) have been determined from X-ray studies. Crystal data: for (1), monoclinic, P21/c, a=8.8340(2) Å, b=12.0230(3) Å, c=13.7064(4) Å, β=114.546(2)°, Z=4, R1=0.0429; for (2), monoclinic, P21/n, a=10.0180(7) Å, b=9.5070(7) Å, c=13.3340(9) Å, β=102.264(4)°, 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. |
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Keywords: | Ruthenium Nitrosyl complexes X-ray structure Isomerization process |
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