6,6′-Di-(8″-quinoline)-2,2′-bipyridine Cobalt(II) Complex

Abstract

This short note describes the synthesis of a novel compound, 6,6′-di-(8″-quinoline)-2,2′-bypyridine (2), that bears a bipyridyl backbone and quinoline donors. Compound 2 coordinates with a cobalt(II) ion in a tetradentate manner and affords the complex [CoII(2)(TfO)2], whose molecular structure has been identified by single crystal X-ray diffraction crystallographic analysis. The coordination features of 2 were compared with those of 2,2′:6′,2″:6″,2‴-quaterpyridine (qtpy, 1), a well-studied tetradentate polypyridine ligand. Compound 2 presents a new example of tetradentate chelators for 3d metal ions.