Syntheses and Coordination Studies of 2-(Phosphanylmethyl)pyridine Dioxide toward Silver (I)

The coordination properties of the 2-[(diphenylphosphanyl)-methyl] pyridine N,P-dioxide ligand towards three different silver(I) salts are described. The molecular structures of the coordination complexes obtained showed a strong dependence on the 2-[(diphenylphosphanyl) methyl] pyridine N,P-dioxide ligand and the binding ability of the counterion. The strongly binding trifluoroacetate ion yielded a unique planar silver cluster complex, whereas the less strongly binding triflate and BF4- complexes yielded polymeric structures. The synthesized complexes were fully characterized by elemental analysis and multinuclear NMR spectroscopy techniques. The crystal structures were determined by single-crystal Xray crystallography.