Titanium dioxide nanoparticles functionalized with Pd and W complexes of a catecholphosphane ligand
- Publication Type:
- Journal Article
- European Journal of Inorganic Chemistry, 2005, (3), pp. 496 - 503
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Palladium and tungsten complexes containing the bifunctional ligand 4-diphenylphosphanylcatechol (L1) have been synthesized. The catecholate functionality strongly binds to titanium dioxide nanoparticles, effectively anchoring the complexes to the TiO2 surface. Solid-state 31P NMR spectroscopy was used to probe the surface-bound compounds. Diffuse reflectance infrared spectroscopy also provided data on surface-bound tungsten carbonyl complexes. Preliminary experiments show that the palladium phosphane complex [PdBr2(L1)2] supported on TiO2 catalyzes the Sonogashira coupling of phenylacetylene with 4-iodonitrobenzene. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005).
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