CF3S-Platinum(II) Complexes with Fluorinated Dithioethers. Molecular Structures of [Pt(SCF3)2(RfSCH2CH2SRf)] Rf = C6H4F-2 and C6H4F-3
DOI:
https://doi.org/10.29356/jmcs.v51i1.1335Keywords:
Fluorothiols, fluorothioetheres, platinum, VT-NMR, X-rayAbstract
Abstract. This paper describes the synthesis and characterization of the platinum(II) compounds cis-[Pt(SCF3)2(RfSCH2CH2SRf)] Rf = C6F5 1, C6HF4-4 2, C6H4F-2 3, C6H4F-3 4, C6H4F-4 5 and C6H4(CF3)-3 6. Variable temperature 19F NMR spectra of these complexes, show the presence and interconvertion of syn and anti isomers, consistent with a fast flipping of the metalocycle ring and a slow inversion of configuration at the dithioether sulfur atoms. The molecular and crystalline structures of the compounds [Pt(SCF3)2(2-C6H4FSCH2 CH2SC6H4F-2)] 3 and [Pt(SCF3)2(3-C6H4FSCH2CH2SC6H4F-3)] 4, solved by X-ray diffraction are also described.
Resumen. En este artículo se describen la síntesis y caracterización de los compuestos de platino(II) cis-[Pt(SCF3)2(RfSCH2CH2SRf)], Rf = C6F5 1, C6HF4-4 2, C6H4F-2 3, C6H4F-3 4, C6H4F-4 5 y C6H4(CF3)-3 6. Para estos compuestos, los espectros de RMN de 19F obtenidos a diferentes temperaturas, muestran la presencia e interconversión de isómeros syn y anti, consistente con un cambio conformacional rápido del metalociclo y una inversión de configuración lenta en los átomos de azufre del ditioeter. Se describen también las estructuras cristalinas y moleculares de los compuestos [Pt(SCF3)2(2-C6H4FSCH2 CH2SC6H4F-2)] 3 y [Pt(SCF3)2(3-C6H4FSCH2CH2SC6H4F-3)] 4, determinadas mediante difracción de rayos-X.
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