SPMs as Components in Supramolecular Assemblies

1) A similar SPM based on isopropylidene subunits gave the analogous complex 35 (see Ref. [51]). 

The possible use of this material as a porous solid was later evaluated using hyperpolarized 129Xe NMR spectroscopy, which demonstrated the permanent porosity of the material even after the removal of the co-crystallized solvent [53]. 

The SPMs 43 and 44 with opposing 2,2 -bipyridine donor sites for metal complexa-tion were prepared by Schliiter and coworkers using a Sonogashira reaction to effect 

2) This same convention will be used periodically throughout the chapter to show the final ring closing bond. 

198 6 Shape-Persistent Macrocycles Based on Acetylenic Scaffolding 

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