Linkage Between Separation of Cu2+, Co2+, and Ni2+ on TLC and Crystal Field Theory

• Published in: Journal of chromatographic science Vol. 46; no. 10; pp. 907 - 911
• Main Author: Ergul, S.
• Format: Journal Article
• Language: English
• Published: Niles, IL Oxford University Press 01.11.2008; Preston Publications
• Subjects: Analytical chemistry; Chemistry; Chromatographic methods and physical methods associated with chromatography; Exact sciences and technology; Other chromatographic methods; Divalent metal Complexes; Thin layer chromatography; Copper II Complexes; Chromatographic retention; Organic ligand; Field theory; Transition metal Complexes; Crystal field; Cobalt II Complexes; Nickel II Complexes
• ISSN: 0021-9665; 1945-239X
• DOI: 10.1093/chromsci/46.10.907

M(DEDTC)2 (M = Cu, Co, or Ni) and M(PyDTC)2 (M = Cu or Co) complexes prepared by reactions of sodium diethyldithiocarbamate (NaDEDTC) and ammonium pyrrolidinedithiocarbamate (NH4PyDTC) with metal (II) nitrates are examined for qualitative analysis and separation using thin-layer chromatography (TLC) systems in the literature. Already known separability of metal cations cited and their complexes are reexamined and discussed in the context of relation to the crystal field theory (CFT) and TLC as a new approach and adaptation. Because the chromatographic data have been agreed on with assumptions of CFT, it is concluded that CFT is closely related to the TLC separation of these metal cations and their complexes. Therefore, this study may be useful in understanding of the linkage between the CFT on coordination chemistry and the chromatographic parameters [e.g., retention factor (Rf ) and theoretical plate numbers (N)] of the complexes.