On di-(<I>o</I>-diphenyl) thiocarbazone

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Other Title
  • ジ-(<I>o</I>-ジフェニル)チオカルバゾンについて
  • ジ- o-ジフェニル チオカルバゾン ニ ツイテ
  • Syntheses of derivatives of dithizone and their application to analytical chemistry. VI
  • ジチゾン誘導体の合成とその分析化学的研究(第6報)

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Description

By use of a carbon tetrachloride solution of the reagent given in title, its fundamental properties have been investigated. The extraction of the reagent in carbon tetrachloride into an aqueous layer was not sufficient by use of aqueous ammonia and it required to use an aqueous solution of sodium hydroxide. The maximum absorption wave lengths of the reagent and the metal complex solution were shifted towards longer wave length from those of dithizone but they were in a shorter wave length side than those of di-(p-diphenyl) thiocarbazone. The reactivity of the reagent with the metal ion was lower than that of dithizone; only Ag+, Hg2+, Cu2+, and Cd2+ are extracted quantitatively in pH ranges up to 8, while Zn2+, Pb2+, and Bi2+ were not extracted quantitatively. The molecular absorption coefficient at the maximum absorption wave length in the visible range has been estimated and the following results were obtained : Reagent solution : 33.9× 103; Ag+ -complex solution : 25.1× 103; Hg2+-complex solution : 57.2× 103; Cu2+-complex solution : 48.6× 103; Cd2+-complex solution : 75.0 × 103. Also, extraction coefficients (log K) of Hg2+-complex and Cu2+-complex have been estimated and the values 25.13 for Hg2+ and 9.91 for Cu2+ were obtained.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 9 (5), 409-415, 1960

    The Japan Society for Analytical Chemistry

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