Chelating macroligand systems

Main Approaches to Calculating the Equilibrium Constants in Metal Ion — Chelating Macroligand Systems... 

The assessment of the chelating ability of macroligands and applicability of such systems requires the data on the quantitative evaluation of the chelation processes such a stability constants and formation function. Contemporary methods are largely based on the composition of the products formed. The major methods of analyzing the quantitative parameters of MX chelation use predominantly the same techniques that are applied to the description of complexing reactions with participation of monofunctional macroligands [5, 7b, 13a]. 

Initially, Ln PMCs were synthesized in a mixed solvent system consisting of acetone, CH2CI2, and MeOH to accommodate both die metal salt and macroligands. More recently, it has been found that THF can be used as a solvent for the chelation reaction, simplifying the synthesis. By varying the equivalents of macroligand in the reaction mixture, both tris or tetrakis Eu dbm complexes can be targeted. 

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