Palladium anisotropic

Dioximes form bis complexes (35) where the ligand normally chelates through the nitrogen atoms.251-253 Detailed studies have been made of the partially oxidized compounds obtained from reaction of bis(diphenylglyoximato)- and bis(benzoquinone dioximato)-palladium with iodine254,255 and bromine.256 These complexes contain polyhalide anions and possess the high anisotropic electrical conductivity associated with many complexes which crystallize as stacked molecular units.257... 

However, a later study with more anisotropic-elongated acetylenes (86 M = Pt, Pd, R = Me, Et, Pr) indicated that larger phosphines were not well tolerated as mesomorphism was lost on the introduction of tripropylphosphine (Table 14)4 Increasing the size of the phosphine substituents considerably reduced the melting transition temperatures. Mesomorphism was absent in the analogous palladium complexes, decomposing rapidly above 100 °C due to their lower thermal stability compared to their platinum congeners. 

Matsushima, T., Anisotropic velocity distribution of desorbing product in carbon monoxide oxidation on palladium (1 1 0), J. Chem. Phys., 97, 2783-2789, 1992. 

Approaches to Synthesis and Characterization of Spherical and Anisotropic Palladium Nanomaterials... 

In this chapter we describe the synthetic procedures that have been developed to create spherical and anisotropic palladium nanostructures with controlled size and shape. A discussion of the characterization techniques used to study both the chemical and physical properties of these particles is included. Finally, some details will be provided on the applications of palladium nanoparticles as they relate to the life sciences. 

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