Figure 8

(a) (t-Bu-G 1 N) 2 as a supramolecular building unit with four branches, (b) the 2D network from (t-Bu-G 1 N) 2 units connected by H-bonds of type I, and (c) the 3D framework formed from 2D networks by H-bonds of type II. The scheme illustrates supramolecular connectivity of the units of (t-Bu-G 1 N) 2 in the solid state rather than the real 3D geometry of the dendrimer.