Schwefel in aromatischen Verbindungen als Ligandatom in Chelatkomplexen II

Abstract The hitherto unknown compounds 5‐(2‐Pyridyl)‐thiazole and 2‐(N‐Thioformyl‐ω‐aminoacetyl)‐pyridine have been synthesized. The stability constants of the Cu2+‐1:1‐complexes of 5‐(2‐Pyridyl)‐thiazole, 2‐(2‐Pyridyl)‐thiazole and 4‐(2‐Pyridyl)‐thiazole have been measured and are discussed. Evidence for the coordination of the sulphur atom in 5‐(2‐Pyridyl)‐thiazole is given.