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respectively. All P-Au vectors point approximately to the center of the cluster with normal P-Au distances (2.27 ± 0.09 A). Physical data including 197Au Mossbauer and (solid-state) 31Pj'H) NMR are reported. [Au7L7]+ can also be observed during the reaction of L with the novel compound [AugL6I]PF6. The latter cluster could be prepared from the reaction of [Au9Lg]3+ with Bu4NI. The intermediacy of the title compounds in the formation and reactivity of gold cluster compounds will be discussed.Synthesis, Structure, and Magnetic Properties of Fluoride-Bridged Copper(II) Dimers. Crystal and Molecular Structures of Bis(^-fluoro)bis[tris(3,4,5-trimethylpyrazole-iV1 2)copper(II)] Bis (tetrafluoroborate) and Bis(^-fluoro)bis[(5-methylpyrazole-JV2)bis(3,5-dimethylpyrazole-Ar2)copper(II)] Bis (tetrafluoroborate)

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The reactivity of metal cluster compounds toward H2 and the structures and properties of hydride-containing cluster compounds are important because they should provide a better understanding of homogeneous and heterogeneous catalytic processes.1 Hydrido compounds of heterometallic clusters that contain gold have been described, and the presence of hydride bridges between gold and the helero metal is well documented.2-6 In [Ru(dppm)2(#t-H)2(AuPPh3)2]+

Preparation and X-ray Structure Determination of Tris[bis(diphenylphosphino)methane]diiodotetragold

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