Tripalladium clusters

Harvey et This review will focus on tripalladium clusters, their synthesis,... 

Synthesis of neutral mixed-valence tripalladium clusters... 

Synthesis of tripalladium clusters in the formal oxidation state of Pd(II)... 

The anionic tripalladium cluster (Pd3(//-S02)2(A -Cl)(PPh3)3] reacts with NOBF4 to substitute one of the bridging ligands, SO2, for... 

Synthesis and Reactivity of Tripalladium Clusters 413 Table 2. Binding constants, iiii, for lPdi(/irCO)(//-dppm)3]" and IPd l/tj-COli/r-dpam),] ... 

A review22 with 100 references, is given on the chemistry of coordinatively unsaturated tripalladium and triplatinum clusters and on the relation between this chemistry and that which occurs on a Pt surface during chemisorption and catalysis. 

The tripalladium mixed-valence Pd3(2/3) and Pd3(4/3), Pd(II) and Pd(0) clusters may be formed with a range of phosphines, isocyanides, or carbonyls as terminal ligands and carbonyls, nitrosyls, isocyanides, sulfur dioxide, phosphides, phosphines or diphosphines, halides, thiolates as doubly or triply bridging ligands. These clusters exhibit a wide range of steric and electronic environments. 

E5,11 Coordinatively unsaturated tripalladium and triplatinum clusters models for reactions on metal surfaces E5.12 Chemistry of carbonylpalladium acetate... 

Agostic C-P interactions occur in phosphine complexes and in a trinuclear Ru cluster with a /r-phosphido interaction. Reaction with H2 cleaves P-Cph to give benzene and a /tg-phosphinidene complex shows that the C-P bond is activated as for other a complexes. Si-Si bonds also coordinate, including a unique tripalladium complex with six Si in the coordination sphere of the central Pd and initially believed to have an unprecedented Pd oxidation state. DFT studies showed formulation as a Pd Si-Si a complex (also unprecendented) was correct, underscoring both the multifarious and often well-concealed nature of H2 and a bond coordination. 

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