Assembly of a tri-silver metallo-capsule incorporating a tripodal tris-pyridyl ligand

摘要

A trinuclear metallo-capsule has been assembled from a new tripodal pyridyl ligand and three silver(I)ions;the X-ray structure shows the presence of a Ag-Ag interaction in the solid state giving rise to a non-symmetric capsule arrangement while NMR evidence indicates that the structure in solution is symmetrical.A frequent objective of metallo-supramolecular chemistry over the past few decades has been the design of ligands which can be directed,with the aid of a suitable metal ion,to form pre-determined architectures.