Effect of electronegativity of donor atoms on RF values of tris(β-diketonato) complexes of cobalt(III), chromium(III) and ruthenium(III) by thin-layer chromatography on silica gel
Abstract
The effect of the electronegativity of donor atoms on RF values obtained by TLC on silica gel was investigated with two series of complexes of the type [M(acac)3-n(phacphac)n] and [M(acac)3-n(phacphSac)n], where M is Co(III), Cr(III) or Ru(III), acac=2,4-pentandionato ion, phacphac=1,3-diphenyl-1,3-propanedionato ion and phacphSac=3-mercapto-1,3-diphenyl-prop-2-en-1-on ion (n=0-3). Development was with nine single and six two-component solvent systems. The RF values of the complexes increase by replacing one oxygen atom of a β-diketonato ligand with a less electronegative sulphur atom. A positive linear dependence between the RM values of the complexes and the numbers of acac substituted by phacphSac ligands was established. The separation mechanisms and separation factors are discussed. © 1993 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH.
Keywords:
β-diketonato complexes / Ligand electronegativity / Silica gel layers / Thin-layer chromatographySource:
Chromatographia, 1993, 37, 11-12, 599-602Collections
Institution/Community
Hemijski fakultet / Faculty of ChemistryTY - JOUR AU - Tešić, Živoslav Lj. AU - Janjić, Tomislav J. AU - Tošić, R.M. AU - Ćelap, M.B. PY - 1993 UR - https://cherry.chem.bg.ac.rs/handle/123456789/32 AB - The effect of the electronegativity of donor atoms on RF values obtained by TLC on silica gel was investigated with two series of complexes of the type [M(acac)3-n(phacphac)n] and [M(acac)3-n(phacphSac)n], where M is Co(III), Cr(III) or Ru(III), acac=2,4-pentandionato ion, phacphac=1,3-diphenyl-1,3-propanedionato ion and phacphSac=3-mercapto-1,3-diphenyl-prop-2-en-1-on ion (n=0-3). Development was with nine single and six two-component solvent systems. The RF values of the complexes increase by replacing one oxygen atom of a β-diketonato ligand with a less electronegative sulphur atom. A positive linear dependence between the RM values of the complexes and the numbers of acac substituted by phacphSac ligands was established. The separation mechanisms and separation factors are discussed. © 1993 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH. T2 - Chromatographia T1 - Effect of electronegativity of donor atoms on RF values of tris(β-diketonato) complexes of cobalt(III), chromium(III) and ruthenium(III) by thin-layer chromatography on silica gel VL - 37 IS - 11-12 SP - 599 EP - 602 DO - 10.1007/BF02274108 ER -
@article{ author = "Tešić, Živoslav Lj. and Janjić, Tomislav J. and Tošić, R.M. and Ćelap, M.B.", year = "1993", abstract = "The effect of the electronegativity of donor atoms on RF values obtained by TLC on silica gel was investigated with two series of complexes of the type [M(acac)3-n(phacphac)n] and [M(acac)3-n(phacphSac)n], where M is Co(III), Cr(III) or Ru(III), acac=2,4-pentandionato ion, phacphac=1,3-diphenyl-1,3-propanedionato ion and phacphSac=3-mercapto-1,3-diphenyl-prop-2-en-1-on ion (n=0-3). Development was with nine single and six two-component solvent systems. The RF values of the complexes increase by replacing one oxygen atom of a β-diketonato ligand with a less electronegative sulphur atom. A positive linear dependence between the RM values of the complexes and the numbers of acac substituted by phacphSac ligands was established. The separation mechanisms and separation factors are discussed. © 1993 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH.", journal = "Chromatographia", title = "Effect of electronegativity of donor atoms on RF values of tris(β-diketonato) complexes of cobalt(III), chromium(III) and ruthenium(III) by thin-layer chromatography on silica gel", volume = "37", number = "11-12", pages = "599-602", doi = "10.1007/BF02274108" }
Tešić, Ž. Lj., Janjić, T. J., Tošić, R.M.,& Ćelap, M.B.. (1993). Effect of electronegativity of donor atoms on RF values of tris(β-diketonato) complexes of cobalt(III), chromium(III) and ruthenium(III) by thin-layer chromatography on silica gel. in Chromatographia, 37(11-12), 599-602. https://doi.org/10.1007/BF02274108
Tešić ŽL, Janjić TJ, Tošić R, Ćelap M. Effect of electronegativity of donor atoms on RF values of tris(β-diketonato) complexes of cobalt(III), chromium(III) and ruthenium(III) by thin-layer chromatography on silica gel. in Chromatographia. 1993;37(11-12):599-602. doi:10.1007/BF02274108 .
Tešić, Živoslav Lj., Janjić, Tomislav J., Tošić, R.M., Ćelap, M.B., "Effect of electronegativity of donor atoms on RF values of tris(β-diketonato) complexes of cobalt(III), chromium(III) and ruthenium(III) by thin-layer chromatography on silica gel" in Chromatographia, 37, no. 11-12 (1993):599-602, https://doi.org/10.1007/BF02274108 . .