Hexagonal Frameworks and Graphite-like Structures

The scaffolding and related microporous materials are receiving widespread interdisciplinary attention, and the borders between chemistry, physics, and materials science are therefore vague and 

Metal cyanide, which has received little attention for years in many texts concerned with inorganic structures, is now found to possess the most outstanding feature as a building block for infinite polymeric frameworks. Some rather elegant metal cyanide structures with extended frameworks have recently been discovered (121-128). The synthetic strategy is based on the combination of a diatomic bifunctional rodlike CN ion with a considerable preference for binding metals at each end in a linear fashion together with modification of 

Pyrazine (L39) and substituted pyrazines have long been known to act as exo-didentate ligands to linearly bridge metal ions, generating oligomeric and polymeric metal complexes with infinite chain and 

Slightly distorted hexagonal frameworks defined by six L39-bridged copper(I) ions are observed in [Cu2(L4o)3(PF6)2] (L40 = 2,5-dimethylpyr- 

The complexes falling into other groups as shown in Fig. 23(b)—(d), are significantly less numerous. The chlorine-substituted pyrazine is 

Some nitrogen-containing ligands in copperd) and silverd) complexes hav- 

Schematic view of the interwoven honeycomb grids in [Cu2(Ls9)3]SiF6. (From Fig. 4 in MacGillvray, L. R. Subramanian, S. Zaworotko, M. J. J. Chem. Soc. Chem. Commun. 1994, 1325.) 

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