57
Views
1
CrossRef citations to date
0
Altmetric
Original Articles

BINUCLEAR CHELATES OF DTPA WITH ALUMINUM(III) AND CHROMIUM(III) IONS

, , &
Pages 893-902 | Received 01 Dec 2000, Accepted 01 Feb 2001, Published online: 23 Aug 2006
 

Abstract

The reaction of aluminum(III) with chromium(III)-DTPA “complex chelating agent” has been investigated, in aqueous solution, at 20°C in NaClO4 1.0 mol dm−3 by potentiometric methods. In acidic medium and with ligand excess three different complex species (AlCrL+, Al(OH)CrL and Al(CrL) 2) were evidenced and, knowing the protonation constants of the chromium(III)-DTPA complex, the stability constants were calculated. The comparison of these constants with those of the corresponding complexes of aluminium(III) with iminodiacetic acid proved the coordination of aluminum(III) occurs in all cases by iminodiacetic groups. The mononuclear [H2AlL(H2O)] and the heterobinuclear [Al(OH)CrL(H2O)6] complexes were also obtained as solid compounds and were characterized by X-ray and IR spectroscopy and thermoanalytical techniques (TG and DSC).

ACKNOWLEDGMENTS

The authors would like to thank Prof. R. Caminiti and Dr. C. Sadun of the University “La Sapienza” of Rome for their helpful in X-ray measurements and data processing.

The National Research Council (CNR) and Ministry of the University and Scientific Technological Research (MURST) of Italy are gratefully acknowledged for financial spport.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 768.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.