Abstract
In platinum (II) dithioacetylacetonate which was obtained from monothioacetylacetone and platinum (II) ion in acidic medium by the replacement reaction of the ligand atom, considerable π-delocalization of the chelate ring is presumed by the spectroscopic data. Platinum (IV) monothioacetylacetonate which was obtained from monothioacetylacetone and platinum (II) ion in neutral medium did not produce dithio chelate with hydrogen sulfide unlike the case of palladium chelate. In the reaction of monothioacetylacetone with rhodium similar chelate formations were observed to the case of platinum chelate. In the reaction of monothioacetylacetone with mercury (II) ion, the product was a polymeric complex, which is considered to be produced from unstable complex through a intermolecular replacement of the ligand atom. From disulfide of monothiodibenzoylmethane, platinum, rhodium and mercury ions produced respective metal chelates or complexes. These features of the complex formations are attributed to bcharacter of these metals, namely particularly high affinity of these metals to sulfur.
