Solid-state materials metal-rich

With boron and an appropriate amount of some sort of alkaline metal halide present in the starting materials for the solid-state reactions, then we obtain zirconium cluster materials belonging to the 6-14 family. Single-crystal X-ray data of products from iodine-rich reactions were used to determine the crystal structures of Na[(Zr6B)Cl3.87(5)lio.i3], and Cs[(Zr6B)Cl2.i6(5)lii.84] [21]. Both phases... 

The structural similarities between these clusters and a piece of metal are obvious, and the same tetrahedral and octahedral sites present in a close-packed metallic lattice are also found in molecular transition metal clusters. Solid-state metal alloys are industrially important materials the simplest can be regarded as a metallic lattice containing individual main-group atoms in a set of interstitial holes. Likewise, there are numerous examples of discrete molecular clusters containing either electron-deficient, electron-precise, or electron-rich atoms in their interstitial cavities. 

As corrosion protection by active coatings such as Zn-rich [3], Mg-rich [11], or CP-coatings relies on electrical communication with the underlying metal, the nature of any intervening oxide layer will likely play an important role. As discussed in Section 15.6.3, the electrodeposition of CP films on oxideforming metals is also greatly influenced by the electrical properties of the oxide layer. A detailed understanding of oxide films requires aspects of materials science, solid-state physics, and electrochemistry, and such a discussion is beyond the scope of this chapter. For a detailed discussion of oxide films and their properties, the reader is referred to Ref. [16]. In this section, we provide a brief overview of the... 

---