A New Macrobicyclic Tris-bipyridine Ligand and Its Cu and Ag Complexes (pages 1331–1333)
Prof. Dr. Javier de Mendoza, Esther Mesa, Dr. Juan-Carlos Rodríguez-Ubis, Dr. Purificación Vázquez, Prof. Dr. Fritz Vögtle, Dipl.-Chem. Paul-Michael Windscheif, Priz.-Doz. Dr. Kari Rissanen, Prof. Dr. Jean-Maríe Lehn, Daniel Lilienbaum and Dr. Raymond Ziessel
Version of Record online: 22 DEC 2003 | DOI: 10.1002/anie.199113311
The novel cage ligand of Ag-cryptate 1 is formed in a one-pot synthesis through condensation of the corresponding bipyridinedialdehyde with tris(2-aminoethy1)amine in greater than 70 % yield. The cryptate 1 is the first Ag1 complex in which three Ag1 ions are direct neighbors within the same cavity. All 14 N atoms of the ligand are involved in coordination. Drastic conformational changes during complexation, particularly for the trisbipyridine fragment, were revealed by X-ray structure analyses of the cage ligand and of 1.