Uranium (VI)-5-Iodo-8-Hydroxyquinoline-7-Sulfonic Acid Chelate

Chemical Laboratories, Birla Institute of Technology and Science, Pilani (Rajasthan) Received 12 May 1970; revised MSS received 11 April 1972 In recent communications from these laboratories, the authors reported the charac­teristics of the uranium chelates of 8-hydroxyquinoline-7-sulfonic acid and some of its derivatives1-3. The present work deals with the detailed investigation of the orange red complex formed between uranyl ion and 5-iodo-8-hydroxyquinoline-7-sulfonic acid (abbreviated as IHQS) in aqueous medium regarding composition, stability and thermo­dynamic parameters like \(\bigtriangleup\)G,\(\bigtriangleup\)H and \(\bigtriangleup\)S, associated with the complex formation, by spectrophotometric method