Stacked planar geometry

One-dimensional stacking of the molecules may provide a framework for possible band structure formation. In this case, repeat units should preferably have an overall planar geometry. This concept can be extended to two-dimensional (2D) structural arrangements where interactions between the molecules are found along two directions as in cation-radical salts derived from TTF-like molecules such as BEDT-TTF (BEDT-TTF = C10H8S8, bis(ethylenedithio)-tetrathiafulvalene) (13), or even to three-dimensional (3D) systems such as the doped A Ceo fullerides (47). 

In planar SOFC, the anode, electrolyte, and the cathode are sandwiched together their geometry is planar. The cells were assembled by stacking planar cells and rigid planar interconnectors alternately. The typical structure of a tabular SOFC is shown in Figure 5-2. 

Besides Ni(II), Pd(II), and Pt(II), the isoelectronic Co(I), Rh(I), and Ir(I) square planar geometry. Molecules of the type 20 dicar-bonylacetylacetonates (R = H), M = Rh (57, 270) and Ir (56) have been shown to stack with relatively short metal-metal bond distance (20, 32 ), Table XVI. The single-crystal conductivities of 20 (M = Rh, Ir) have been investigated with the results. Table XVI, suggesting that these materials are in-... 

Fig I. Geometries for the formation of an internal solid surface in volume samples Stacked planar glass slides, porous materials, nonporous colloidal particle dispersions, and densely packed colloidal particles. 

---