Simultaneous effect of geometrical isomerism and chelate ring size of tris(aminocarboxylato)cobalt(III) complexes on their behaviour in thin-layer chromatography on silica gel and alumina

Autor:	D. Miljević, Nenad Juranić, Gordana Vučković, M.B. Ćelap
Rok vydání:	1991
Předmět:	Chromatography Hydrogen bond Silica gel Organic Chemistry chemistry.chemical_element General Medicine Ring (chemistry) Biochemistry Thin-layer chromatography Analytical Chemistry Ring size chemistry.chemical_compound Octahedron chemistry Solvent effects Cobalt
Zdroj:	Journal of Chromatography A. 585:181-185
ISSN:	0021-9673
DOI:	10.1016/0021-9673(91)85075-q
Popis:	The simultaneous effects of geometrical isomerism and chelate ring enlargement of octahedral complexes on their RF values obtained by chromatographing twelve isomers of complexes of the general formula [Co(gly)3-α (β-ala)n] (n = 0–3; glyH = glycine; β-alaH = β-alanine) on thin layers of silica gel and alumina by using five monocomponent solvent systems was investigated. It was found that in most instances the effect of the ring size was predominant. Within the series of facial or meridional isomers it was established that with the enlargement of the chelate ring the RF values of the complexes decreased on silica gel but increased on alumina, which was ascribed to the formation of hydrogen bonds of different strengths between the complexes and the adsorbent.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4fe66382c68cd45c900e89bdca9ef7c6 https://doi.org/10.1016/0021-9673(91)85075-q Zobrazit plný text záznamu