Ligandeneigenschaften von Thiopyronen. I. Metallchelate von 2-Methyl-3-hydroxy-4-thiopyron (Thiomaltol)

Coordination Ability of Thiopyrones. I. Metal Chelates of 2-Methyl-3-hydroxy-4-thiopyrone (Thiomaltol) Metal chelates of 2-methyl-3-hydroxy-4-thiopyrone with a series of metals are prepared as solids, the constitution of the complexes is determined in solution, and the extraction ability of the ligand for copper, nickel, cobalt and palladium is studied. Stability constants of the zinc and cadmium chelates are compared with those of thiodibenzoyl-methane.