Complexes of rare-earth perchlorates with ditbutyl amides of di, tri and tetraglycolic acids

  • C. Premlatha
  • S. Soundararajan
Inorganic and Analytical


New complexes of lanthanide perchlorates with di-t-butyl amides of di, tri and tetraglycolic acids have been synthesised. The complexes have the general formula Ln(DiGA)3(ClO4)3; Ln(TriGA)2 (ClO4)3 and Ln(TetGA)2 (C1O4)3, where Ln = La-Yb and Y and DiGA = N,N′, di-t-butyl diglycolamide, TriGA N,N′, di-t-butyl triglycolamide and TetGA = N,N′ di-t-butyl tetraglycolamide, respectively. The complexes have been characterized by analysis, electrolytic conductance, infrared,1H and13C nuclear magnetic resonance and electronic spectral data.

Infrared spectra indicate the coordination of all the available ether oxygens and the amide carbonyls in each of the ligands, to the metal ions. IR and conductance data show that the perchlorate groups in all the complexes are ionic.1H and13C NMR data support the IR data regarding the mode of coordination of ligands to the metal ions. Electronic spectral shapes have been interpreted in terms of nine, eight and ten coordination in DiGA, TriGA and TetGA complexes respectively.


Lanthanide perchlorate complexes infrared nuclear magnetic resonance di-t-butyl amides 


  1. Albertsson J 1968Acta Chim. Scand. 22 1563CrossRefGoogle Scholar
  2. Habenschuss A and Spedding F H 1979J. Chem. Phys. 70 3758CrossRefGoogle Scholar
  3. Jagannathan R and Soundararajan S 1980J. Irtorg. Nucl. Chem. 42 145CrossRefGoogle Scholar
  4. Jorgensen C K 1962Prog. Inorg. Chem. 4 73CrossRefGoogle Scholar
  5. Karraker D G 1967Inorg. Chem. 6 1863CrossRefGoogle Scholar
  6. Premlatha C and Soundararajan S 1980aJ. Inorg. Nucl. Chem. (in press)Google Scholar
  7. Premlatha C and Soundararajan S 1980bInorg. Nucl. Chem. Lett. 16 135CrossRefGoogle Scholar
  8. Premlatha C and Soundararajan S 1980cJ. Less. Common Metals 75 223CrossRefGoogle Scholar
  9. Sinha S P 1966Spectrochim. Acta 23 57CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 1981

Authors and Affiliations

  • C. Premlatha
    • 1
  • S. Soundararajan
    • 1
  1. 1.Department of Inorganic and Physical ChemistryIndian Institute of ScienceBangaloreIndia

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