Double-double effect and the coordination number: II. Mixed lanthanide(III) complexes of trans-1,2-diaminocyclohexanetetraacetic acid with iminodiacetate, glycine and hydroxide ions

T. Mioduski

doi:10.1007/bf02517904

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 53: Issue 1-2

Double-double effect and the coordination number

II. Mixed lanthanide(III) complexes of trans-1,2-diaminocyclohexanetetraacetic acid with iminodiacetate, glycine and hydroxide ions

Author:

T. Mioduski

T. Mioduski University of Liège Department of Analytical and Radiochemistry Sart Tilman B-4000 Liège Belgium

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Pages:: 37–47

Online Publication Date:: 09 Jan 2007

Publication Date:: 01 Mar 1979

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02517904

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Abstract

The partial stability constants of the mixed complexes, Ln(III)-DCTA-L (where DCTA is trans-1,2-diaminocyclohexanetetraacetic acid and L, consecutively, OH⁻, glycine and iminodiacetate) have been determined potentiometrically at 25°C and at the ionic strength of 1 (KCl). It has been concluded that in the 1∶1 chelates, [(H₂O)_xLn(DCTA)]⁻, the number of water molecules decreases from 3 in the La−Sm range to 2 in the Dy−Lu one. The coordination numbers of the mixed complexes studied are discussed on the basis of the theory of the double-double effect. An explanation for the extrastability of the Ln(DCTA) chelates is given.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)