Extraction-spectrophotometric determination of rhenium with 5,6-diphenyl-2,3-dihydro(asym)triazine-3-thione

  • Majumdar A
  • Bhowal S
  • Datta B
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The reagent 5,6-diphenyl-2,3-dihydro(asym)triazine-3-thione produces a green complex with perrhenate in hydrochloric acid medium in presence of stannous chloride. The complex on extraction in chloroform shows a peak at 685 nm. The system obeys Beer's law from 2-10 p.p.m. of rhenium and its molar absorptivity is 1.53-l0-4. It tolerates the presence of a large number of ions, including MoXXXand WXXX. Job's and molar ratio methods suggest that rhenium and the reagent are present in the ratio 1:2 and the isolated complex is of the same composition, i.e. ReO(C25H10N3S)2. © 1977.

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  • A. K. Majumdar

  • S. K. Bhowal

  • B. Datta

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