The effect of the electronegativity of donor atoms in coordinated beta-diketonato ligands on the chromatographic behaviour metal complexes
Апстракт
The effect on chromatographic behavior, on thin layers of silica gel, of the electronegativity of ligator atoms has been studied for three series of beta-diketonato complexes of the type [M(acac(3-n)(phac-phac)(n)], [M(acac)(3-n)(phacphSac)(n)], and [M(acac)(3-n)(phSacphSac)(n)] (where M represents cobalt(III), chromium(III) or ruthenium(III), acac is the 2,4-pentanedionato ion, phacphac is the 1,3-diphenyl-1,3-propanedionato ion, phacphSac is 3-mercapto-1,3-diphenyl-rop-2-en-1-one, phSacphSac is the 3-mercapto-1,3-diphenyl-prop-2-en-1-tion ion, and n = 0-3). For chromatographic separations, ten typical normal-phase mobile phases were used, five mono-component and five two-component. For all the complexes examined it was found that substitution of the donor oxygen atom by a less electronegative sulfur atom resulted in increased mobility of the complex. It was also established that substitution of the acac ligand resulted in increased hR(F) values. For all the complexes examined a linea...r dependence was observed between the R-M values of the complexes and the number of acac ligands substituted by phSacphSac ligands. On the basis of these results, possible separation mechanisms are discussed.
Кључне речи:
thin-layer chromatography / silica gel / beta-diketonato complexes / ligand substituents / donor atom electronegativityИзвор:
Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography, 2004, 17, 4, 250-254Издавач:
- Research Inst Medicinal Plants, Budakalasz
DOI: 10.1556/JPC.17.2004.4.2
ISSN: 0933-4173
WoS: 000224107400002
Scopus: 2-s2.0-4744358128
Колекције
Институција/група
Hemijski fakultet / Faculty of ChemistryTY - JOUR AU - Baošić, Rada AU - Milojković-Opsenica, Dušanka AU - Tešić, Živoslav Lj. PY - 2004 UR - https://cherry.chem.bg.ac.rs/handle/123456789/661 AB - The effect on chromatographic behavior, on thin layers of silica gel, of the electronegativity of ligator atoms has been studied for three series of beta-diketonato complexes of the type [M(acac(3-n)(phac-phac)(n)], [M(acac)(3-n)(phacphSac)(n)], and [M(acac)(3-n)(phSacphSac)(n)] (where M represents cobalt(III), chromium(III) or ruthenium(III), acac is the 2,4-pentanedionato ion, phacphac is the 1,3-diphenyl-1,3-propanedionato ion, phacphSac is 3-mercapto-1,3-diphenyl-rop-2-en-1-one, phSacphSac is the 3-mercapto-1,3-diphenyl-prop-2-en-1-tion ion, and n = 0-3). For chromatographic separations, ten typical normal-phase mobile phases were used, five mono-component and five two-component. For all the complexes examined it was found that substitution of the donor oxygen atom by a less electronegative sulfur atom resulted in increased mobility of the complex. It was also established that substitution of the acac ligand resulted in increased hR(F) values. For all the complexes examined a linear dependence was observed between the R-M values of the complexes and the number of acac ligands substituted by phSacphSac ligands. On the basis of these results, possible separation mechanisms are discussed. PB - Research Inst Medicinal Plants, Budakalasz T2 - Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography T1 - The effect of the electronegativity of donor atoms in coordinated beta-diketonato ligands on the chromatographic behaviour metal complexes VL - 17 IS - 4 SP - 250 EP - 254 DO - 10.1556/JPC.17.2004.4.2 ER -
@article{ author = "Baošić, Rada and Milojković-Opsenica, Dušanka and Tešić, Živoslav Lj.", year = "2004", abstract = "The effect on chromatographic behavior, on thin layers of silica gel, of the electronegativity of ligator atoms has been studied for three series of beta-diketonato complexes of the type [M(acac(3-n)(phac-phac)(n)], [M(acac)(3-n)(phacphSac)(n)], and [M(acac)(3-n)(phSacphSac)(n)] (where M represents cobalt(III), chromium(III) or ruthenium(III), acac is the 2,4-pentanedionato ion, phacphac is the 1,3-diphenyl-1,3-propanedionato ion, phacphSac is 3-mercapto-1,3-diphenyl-rop-2-en-1-one, phSacphSac is the 3-mercapto-1,3-diphenyl-prop-2-en-1-tion ion, and n = 0-3). For chromatographic separations, ten typical normal-phase mobile phases were used, five mono-component and five two-component. For all the complexes examined it was found that substitution of the donor oxygen atom by a less electronegative sulfur atom resulted in increased mobility of the complex. It was also established that substitution of the acac ligand resulted in increased hR(F) values. For all the complexes examined a linear dependence was observed between the R-M values of the complexes and the number of acac ligands substituted by phSacphSac ligands. On the basis of these results, possible separation mechanisms are discussed.", publisher = "Research Inst Medicinal Plants, Budakalasz", journal = "Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography", title = "The effect of the electronegativity of donor atoms in coordinated beta-diketonato ligands on the chromatographic behaviour metal complexes", volume = "17", number = "4", pages = "250-254", doi = "10.1556/JPC.17.2004.4.2" }
Baošić, R., Milojković-Opsenica, D.,& Tešić, Ž. Lj.. (2004). The effect of the electronegativity of donor atoms in coordinated beta-diketonato ligands on the chromatographic behaviour metal complexes. in Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography Research Inst Medicinal Plants, Budakalasz., 17(4), 250-254. https://doi.org/10.1556/JPC.17.2004.4.2
Baošić R, Milojković-Opsenica D, Tešić ŽL. The effect of the electronegativity of donor atoms in coordinated beta-diketonato ligands on the chromatographic behaviour metal complexes. in Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography. 2004;17(4):250-254. doi:10.1556/JPC.17.2004.4.2 .
Baošić, Rada, Milojković-Opsenica, Dušanka, Tešić, Živoslav Lj., "The effect of the electronegativity of donor atoms in coordinated beta-diketonato ligands on the chromatographic behaviour metal complexes" in Journal of Planar Chromatography: Modern TLC / Thin Layer Chromatography, 17, no. 4 (2004):250-254, https://doi.org/10.1556/JPC.17.2004.4.2 . .