Cryptands tripodal capping

Figure 4. Synthesis of a laterally nonsymmetric aza-cryptand via tripodal capping strategy.

The cryptands shown in Fig. 7 were synthesized by the tripodal capping strategy. They readily form mononuclear inclusion complexes with a number of transition metal ions. Replacement of secondary amines in the original Ne cage... 

The capping of both termini of three tridentate chelating units with covalent tripods provides highly rigid macrobicyclic receptors (i.e., cryptands), which are ideally suited for investigating variations of crystal-field parameters within isostructural series. Platas et al. (1999) have iso-... 

---