Studies on niobium and tantalum

Part IV. Polynuclear complexes
  • N. R. Srinivasan


It has been found that in aqueous solutions, on vigorous boiling, the 2-tartrato-2-niobates and the corresponding free acid are degraded, giving rise to new complexes of niobium. The conditions of formation and the mechanism of the reaction have been studied. Adequate explanation has been offered for the phenomenon. The compounds are regarded as polynuclear complexes and suitable structures are given for the compounds prepared.


Niobium Tantalum Sodium Hydroxide Tartrate Tartaric Acid 
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  1. Ephraim. Fritz. ..Inorganic Chemistry, London, 1943, p. 506.Google Scholar
  2. Rosenheim and Leyser..Z. anorg. Chem., 1921,119, 1.CrossRefGoogle Scholar
  3. Rosenheim and Traube.. Ibid., 1915,91, 75.CrossRefGoogle Scholar
  4. Srinivasan.. This Journal, 1950,31 A, 194, 300, 381.Google Scholar

Copyright information

© Indian Academy of Sciences 1952

Authors and Affiliations

  • N. R. Srinivasan
    • 1
  1. 1.Indian Institute of ScienceBangalore

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