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

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

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

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The effect of the central ion of tris- β -diketonato complexes of transition metals on their hRF 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/ri value is discussed. The mobility ( hRF 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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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)

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