Studies on the Sulfur-containing Chelating Agents. XXXVIII. Reaction of Platinum (II), Rhodium (III) and Mercury (II) Ion with Monothio-β-diketones and Their Disulfides
作者:SHOSUKE KAWANISHI、AKIRA YOKOYAMA、HISASHI TANAKA
DOI:10.1248/cpb.21.2653
日期:——
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.
由一硫代乙酰丙酮和铂(II)离子在酸性介质中通过配位原子的置换反应得到的二(II)硫代乙酰丙酮酸铂中,根据光谱数据推测螯合环有相当大的π异位。由单硫代乙酰丙酮和铂(II)离子在中性介质中生成的单(IV)硫代乙酰丙酮铂与钯螯合物不同,不会与硫化氢生成二硫代螯合物。在一硫代乙酰丙酮与铑的反应中,也观察到与铂螯合物类似的螯合物形成。在一硫代乙酰丙酮与汞(II)离子的反应中,生成物是一种聚合络合物,这种络合物被认为是通过配体原子的分子间置换从不稳定性络合物中生成的。铂、铑和汞离子从单硫代二苯甲酰基甲烷的二硫化物中生成了各自的金属螯合物或络合物。络合物形成的这些特点归因于这些金属的 b 特性,即这些金属与硫的亲和力特别高。