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3,5-dichlorotrifluorophenyl complexes, aryl derivatives with simple 19F NMR structural probes. The synthesis of general precursors for Pd- and Pt complexes

1998; Elsevier BV; Volume: 551; Issue: 1-2 Linguagem: Inglês

10.1016/s0022-328x(97)00424-5

1872-8561

Pablo Espinet, Jesús M. Martínez‐Ilarduya, Celeste Pérez-Briso, Arturo L. Casado, Matilde Alonso,

Magnetism in coordination complexes

High yield methods for the synthesis of cis-[MR2(COD)] (M=Pd, Pt; R=3,5-C6Cl2F3), cis-[MR2(THF)2] (M=Pd; Pt), trans-[PdR2L2] (L=tht; SMe2), trans-[PtR2(SMe2)2], and [M2(μ-Cl)2R2L2] (M=Pd, L=NCPh, tht, SMe2; M=Pt, L=tht) are reported. These complexes are general precursors for the preparation of other complexes containing cis-MR2, trans-MR2 and MClR moieties in almost quantitative yields. Thus, by displacement of COD, THF, tht or SMe2 by other ligands, almost any isomer of any complex with one or two aryl rings can be prepared. The 19F NMR spectra of these complexes are simple compared to those of other polyfluorophenyl groups, and some examples of the spectral advantages of this partially fluorinated ligand are given.