Platinum complexes clusters

Tetra- and Trinuclear Platinum(II) Cluster Complexes Tadashi Yamaguchi and Tasuku Ito... 

The [Pt6(CO)12]2- dianion can be used as starting material for the synthesis of other platinum carbonyl cluster complexes.1,3... 

SALTS OF MIXED PLATINUM-TETRARHODIUM CLUSTER COMPLEXES... 

Salts of Mixed Platinum-Tetrarhodium Cluster Complexes 373... 

The complex forms purple air-stable crystals and has good solubility in both polar and nonpolar solvents (e.g., acetone, dichloromethane, tetrahydro-furan, benzene, and hexane). It has been characterized crystallographically.7 The structure is an open, but folded, ladder-like array of six metal atoms with the two platinum atoms in the center. The IR spectrum (hexane) exhibits V(co> bands at 2085 (m), 2062 (vs), 2035 (vs), 2016 (w). Pt2Ru4(CO)18 has been found to be very useful for the synthesis of new platinum-ruthenium cluster complexes.10,12,13... 

Among the less common oxidation states those of I and III have the most significance. Complexes of platinum(III) have been of interest for many years because of their intermediacy in substitution reactions of platinum(II) and (IV). More recently binuclear platinum(I) and (III) complexes have been isolated, and the chemistry of these new complexes will be of increasing interest in platinum chemistry. Platinum forms strong homometallic bonds giving rise to multimetallic chain compounds and cluster complexes. The increasing use of X-ray crystallography, and 31P and 19 PtNMR will allow systematic studies to be made on these multimetallic platinum complexes. 

It has been also found that the platinum-ruthenium cluster complex [Pt3Ru6(CO)20(p3-PhC2Ph)(p3-H)(p-H)] is an effective catalyst precursor for the highly selective catalytic hydrosilylation of diphenylacetylene with tri-ethoxysilane (Eq. 15). The true catalyst is actually the decarbonylated species. 

There have been several recent studies of homogeneous catalysis of the water gas shift reaction (equation 7) by mononuclear and cluster catalysts, including mononuclear platinum complexes (15). 

Catalytic Activity of Pt4 Clusters towEird the Hydration of Acetonitrile Trinuclear Platinum(II) Cluster Complexes A. Synthesis—Cluster Core Transformation Structures of Triangular Cluster Complexes Mechanism of the Cluster Core Transformation Reaction from Square-Planar to Triangular Type EHMO Study Solution Behavior 195pt NMR Spectra of Pts Clusters IV. Concluding Remarks References... 

TETRA- AND TRINUCLEAE PLATINUM(II) CLUSTER COMPLEXES L = dmap... 

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