Figure 2.

Represents the isoreticular host systems (H-bonding between carboxyl assemblies). STM images of porous coordination establish via (a) TMA, (b) BTB, (c) BTrB, and (d) TCBPB. (a.i–d.i) displays the molecular structure for the analogous porous systems Reproduced from ref. [2] with permission from the American Chemical Society.