Investigation on oxidation states of rhenium in Re-HEDP

RADIOCHEMISTRY, RADIOPHARMACEUTICALS AND NUCLEAR MEDICINE

Investigation on oxidation states of rhenium in Re-HEDP

WANG Wen-Jin，

LUO Shun-Zhong，

QIAO Jian，

LIU Guo-Ping，

LIU Ye-Bing

Nuclear Science and Techniques

Vol.14, No.3

pp.174-177

Published in print 01 Aug 2003

CLC：O614.432

26700

The oxidation states of rhenium in Re-HEDP (hydroxyethylidene diphosphonate) were measured by the methods of extraction and potentiometric titration. The oxidation state of rhenium in Re-HEDP was mostly +4 valence, and the Re(Ⅳ)-HEDP was oxidized to Re(Ⅴ)-HEDP when it was titrated by I₃^- at pH 2.0. In the reduction system of Vc+Sn²⁺, ReO₄^- was only reduced by Sn²⁺, but Vc was oxidized earlier than Sn²⁺ when it was titrated by I₃^-.

RheniumHEDP (hydroxyethylidene diphosphonate)Oxidation state

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