The effect of the central ion of tris- β -diketonato complexes of transition metals on their retention on thin layers of silica gel

Rada Baošić; Dušanka Milojković-Opsenica; Živoslav Tešić

doi:10.1556/jpc.15.2002.4.4

JPC - Journal of Planar Chromatography - Modern TLC

Volume/Issue:: Volume 15: Issue 4

The effect of the central ion of tris- β -diketonato complexes of transition metals on their retention on thin layers of silica gel

Authors:

Rada Baošić

Rada Baošić University of Belgrade Faculty of Chemistry P.O. Box 158 11001 Belgrade Yugoslavia

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Dušanka Milojković-Opsenica

Dušanka Milojković-Opsenica University of Belgrade Faculty of Chemistry P.O. Box 158 11001 Belgrade Yugoslavia

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, and

Živoslav Tešić

Živoslav Tešić University of Belgrade Faculty of Chemistry P.O. Box 158 11001 Belgrade Yugoslavia

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Pages:: 263–267

Online Publication Date:: 08 Mar 2007

Publication Date:: 01 Aug 2002

Article Category:: Research Article

DOI:: https://doi.org/10.1556/jpc.15.2002.4.4

Keywords:: Central ion; β -Diketonato complexes; Transition metals; Silica gel TLC

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The effect of the central ion of tris- β -diketonato complexes of transition metals on their hR_F values in thin layer chromatography (TLC) on silica gel has been investigated for 24 Co(III), Cr(III), and Ru(III) complexes of the types [M(acac) _{3−
n} (phacphac) _n ] and [M(acac) _{3−
n} (phacphSac) _n ], where n = 0–3, and with four complexes of the type [M(acac) ₃ ], where M = Sc(III), Y(III), Nd(III), or La(III), acac is the 2,4-pentanedionato ion, phacphac is the 1,3-diphenyl-1,3-propanedionato ion, and phacphSac is the 3-mercapto-1,3-diphenylprop-2-en-1-one ion. One- and two-component non-aqueous mobile phases were used for the chromatographic separations. The dependence of retention data on the length of ionic radius and on En/r_i value is discussed. The mobility ( hR_F values) of the tris(acetylacetonato) complexes on thin layers of silica gel is directly proportional to the ionic radius of the central ion. On the basis of the results obtained, adsorption was assumed to be the dominant mechanism of separation under the chromatographic conditions used.

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JPC - Journal of Planar Chromatography - Modern TLC

Print ISSN:: 0933-4173

Online ISSN:: 1789-0993

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Journal of Planar Chromatography - Modern TLC
Language	English
Size	A4
Year of Foundation	1988
Volumes per Year	1
Issues per Year	6
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	0933-4173 (Print)
ISSN	1789-0993 (Online)