Single-, double- and triple-stranded helical metal complexes of chiral tetradentate pyridyl-thiazole ligands : stereoselective synthesis, spectroscopic properties and structural characterization

With a series of chiral pyridine-based tetradentate pyridyl-thiazole ligands L, three types of binuclear helical metal complexes were synthesized. They were the Re(I) single-stranded complexes of formula [Re2(L)(CO)6Br2], the Ag(I) double-stranded complexes of formula [Ag2(L)2](ClO4)2 and the Cu(II) triple-stranded complex of formula [Cu2(L)3](ClO4)4. Each type of them has been characterized using CD spectroscopy and if possible 1H NMR spectroscopy. Three single crystal structures, one from each type, have been determined.Department of Applied Biology and Chemical Technolog