More Than One Sheet Passing Through Any Ring

1 More Than One Sheet Passing Through Any Ring 

A related example involving (6,3) rather than (4,4) nets, in which any 6-gon has components of two independent inclined sheets passing through it is noteworthy in the context of this book in that the connecting rods themselves are encircled in rotaxane fashion by bead-like cucurbituril components, as in structure 5. The 3-connecting nodes of the (6,3) nets are provided by Ag1 each of which is linked to three others by bridging ligands of type 5 [22]. 

In principle (4,4) nets in three mutually perpendicular planes could interpenetrate as considered in reference 1, but no examples of this are known at present. 

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