Abstract

The neotetrazolium hexachloridorhenate(IV) (NTReCl 6) has been synthesized and its composition checked. The optimum conditions for the extraction of NTReCl 6 with dichloroethane have been established. The recovery factor for one-fold extraction is R = 74%. The distribution constant, K D, extraction constant, K ex, and ion-association constant, β, have been determined. Neotetrazolium chloride was found to be suitable reagent for extraction-spectrophotometric determination of rhenium(IV) ( ϵ NTReCl 6 = 3.42 ± 0.20 × 10 4 M −1 cm −1).

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