Metal-based building-block

On oxidation of mononuclear complexes in the potential window <+1.6 V, only one metal-based process is observed. The oxidation potential depends strongly on the nature of the metal ion (Os is oxidized at less positive potentials compared to Ru ) and, less dramatically, on the nature of the coordinated ligands. Because of the previously discussed electronic properties of the isolated components and of the stabilization of the LUMO of 2,3-dpp and 2,5-dpp on coordination to a second metal center, it can be expected that the oxidation potential of the metal-containing building blocks increases in the order ... 

The POM clusters tend to be anionic in nature, being based upon metal oxide building blocks with a general formula of MO (where M is Mo, W, V and sometimes Nb and x can be 4, 5, 6 or 7). POM-based materials have a large range of interesting physical properties [6-10] which result from their many structures, the ability to delocalize electrons over the surface of the clusters, and the ability... 

Fig. 7.15 Metal coordination-based suprastructures from combination of m- and p-iron-based building blocks and a second class of metal salts.

Figure 7. Typical multibridging metal-organic building blocks employed in the assembly of functional supramolecular nanomaterials, based on the coordination chemistry approach.

There are published examples of catalysis on formally saturated sites (metal ions or clusters forming nodes of a MOF). Zou et al. [102] synthesized a 3D functional MOF based on the cubic metal organic building block [NigL,2]2 (H3L=4,5-imidazoledicarboxylic acid). Alkali metal ions (Na+) are placed in the nodes of the framework. This framework shows a stable catalytic activity in the oxidation of CO to CO. ... 

The aim of this chapter is to acquaint the reader the physical principles of SE tunneling devices to be used in nanoelectronics. Based on this the charge transport properties of nanocluster assemblies in one, two and three dimensions will be discussed. By means of selected examples it will be demonstrated that ligand-stabilized nanoclusters of noble metals may be suitable building blocks for nanoelectronic devices. 

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