Synthesis, reactivity, and fluorine-19 nuclear magnetic resonance spectra of binuclear trifluoromethylthio-complexes of platinum and palladium
Abstract
The preparation of [M2(SCF3)2(PR3)4]X2 complexes (M = Pd or Pt; R = Et or Ph; X = BF4 or ClO4) is described. 19F N. m.r. spectra of these complexes are used to assign structures and to demonstrate the existence of syn- and anti-isomers. Bridge-cleavage reactions with PR3 pyridine, p-toluidine, or chloride give monomeric species, cis-[Pt(SCF3)(L)(PR3)2]X or cis-[PtCl(SCF3)(PR3)2], and demonstrate theweakness of the SCF3 bridge compared to SR bridges (where R = hydrocarbon radical). The preparation of the unusual complex [Pt(SCF3)(ClO4)(PPh3)2] is also described.