Modified Bipyridines: 5,5′-Diamino-2,2′-bipyridine Metal Complexes Assembled into Multidimensional Networks via Hydrogen Bonding and π–π Stacking Interactions

✍ Scribed by Christoph Janiak; Stephan Deblon; He-Ping Wu; Mario J. Kolm; Peter Klüfers; Holger Piotrowski; Peter Mayer

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 653 KB
• Volume: 1999
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/(sici)1099-0682(199909)1999:9<1507::aid-ejic1507>3.0.co;2-i

✦ Synopsis

A new synthetic route for the synthesis of 5,5Ј-diamino-2,2-NMR including 113 Cd-NMR, IR, and for the iron complex 57 Fe-Mößbauer spectroscopy. The structure of eight of the bipyridine (5) based on the coupling of 2-chloro-5aminopyridine in the presence of NiCl 2 × 6 H 2 O/PPh 3 /Zn in compounds was elucidated by X-ray crystallography. All of these metal complexes show a bipyridine-metal dimethylformamide is described. The reactions of the potentially ambidentate ligand 5 with salts of the transition coordination. The amino functionality was never involved in metal coordination. The intermolecular arrangement is metals Mn, Fe, Ni, Cu, Zn, Ag, and Cd gave a variety of 13 metal-ligand complexes depending on the anion, the dictated by hydrogen bonding from the amino functionality and by π-π stacking of the bipyridine rings. crystallization conditions and the metal-to-ligand ratio. The complexes obtained were characterized by thermal analyses, [a] Institut für Anorganische und Analytische Chemie, Universität Freiburg, yields the 5,5Ј-diester 10. [15] Hydrazinolysis of the ester Albertstraße 21,