A Palladium-Oxo Complex. Stabilization of This Proposed Catalytic Intermediate by an Encapsulating Polytungstate Ligand

A terminal Pd-oxo unit is reported. The unit is encapsulated in a cavity defined by two [A-α-PW9O34]9- units fused together by one [WO(OH2)]4+ center and forms from Pd(II) in buffered media in the presence of O2. Both X-ray diffraction and EXAFS data are consistent with a Pd-oxo bond distance of ca....

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Veröffentlicht in:	Journal of the American Chemical Society 2005-08, Vol.127 (34), p.11948-11949
Hauptverfasser:	Anderson, Travis M, Cao, Rui, Slonkina, Elena, Hedman, Britt, Hodgson, Keith O, Hardcastle, Kenneth I, Neiwert, Wade A, Wu, Shaoxiong, Kirk, Martin L, Knottenbelt, Sushilla, Depperman, Ezra C, Keita, Bineta, Nadjo, Louis, Musaev, Djamaladdin G, Morokuma, Keiji, Hill, Craig L
Format:	Artikel
Sprache:	eng
Schlagworte:	Catalysis Chemical Physics Chemistry Condensed matter: structure, mechanical and thermal properties Coordination compounds Exact sciences and technology Inorganic chemistry and origins of life Inorganic compounds Kinetics Ligands Magnetic Resonance Spectroscopy Metal complexes Oxidation-Reduction Oxygen - chemistry Palladium - chemistry Physics Preparations and properties Structure of solids and liquids crystallography Structure of specific crystalline solids Tungsten Compounds - chemistry X-Ray Diffraction
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Beschreibung
Zusammenfassung:	A terminal Pd-oxo unit is reported. The unit is encapsulated in a cavity defined by two [A-α-PW9O34]9- units fused together by one [WO(OH2)]4+ center and forms from Pd(II) in buffered media in the presence of O2. Both X-ray diffraction and EXAFS data are consistent with a Pd-oxo bond distance of ca. 1.65 Å. 17O NMR studies confirm that the solid-state structure is maintained in solution.
ISSN:	0002-7863 1520-5126
DOI:	10.1021/ja054131h