The tetra-α isomer of a super aryl-extended tetra-pyridyl calixpyrrole self-assembles into a mono-metallic Pd(II)-cage featuring two different and converging polar binding sites. Mono- and di-topic polar guests are bound reversibly in the cage. A mechanism for guest exchange in the cage complexes is proposed.
A Mono-Metallic Pd(II)-Cage Featuring Two Different Polar Binding Sites
Chem. Commun. 2019, 55 (5), 604-607, DOI: 10.1039/C8CC09195A.