M12L24 Spheres with Endo and Exo Coordination Sites: Scaffolds for Non-Covalent Functionalization
摘要:
M12L24 spherical complexes incorporating 24 free pyridine rings on their interior or exterior surfaces were synthesized via the self-assembly of tridentate tris(pyridine) ligands with Pd2+ ions. Coordination of secondary metal ions in the interior of the spherical framework was achieved through interactions of 24 Ag+ ions with the free endo pyridine rings.
Self-assembly of coordinative supramolecular polygons with open binding sites
摘要:
The design and synthesis of coordinative supramolecular polygons with open binding sites is described. Coordination-driven self-assembly of 2,6-bis(pyridin-4-ylethynyl)pyridine with 60 degrees and 120 degrees organoplatinum acceptors results in quantitative formation of a supramolecular rhomboid and hexagon, respectively, both bearing open pyridyl binding sites. The structures were determined by multinuclear (P-31 and H-1) NMR spectroscopy and electrospray ionization (ESI) mass spectrometry, along with a computational study. Published by Elsevier Ltd.