Solvent infl uence upo n compl exation of kryptofix۵ with C e۳+ cation in bin ary mixed non-aqu eous solv ents

The bin ding ability and selectivity of crown ethers to metal i ons depend on several factors: such as the size of the macrocycle ligand cavity, metal ion radius, type of dono r atom, confor mation of th e ligand, t he nature of the solve nt and etc. Solvent plays a crucial role in the bin ding selectivity of the ligandes fo r metal ions [۱]. Studie s of ligand complexation with the metal cations in different solvents s how that the thermody namic and kinetic pa rameters are affe cted by the nature and the comp osition of the solvent system [۲,۳].In this work,we report the results of comp lexation reaction between kryp tofix۵ with Ce ۳+ cation in acetonitrile-metha nol(AN-MeOH),aceton itrile-dichloroethan(AN-DCE).

کلیدواژه ها:

Kryptofix۵ ، Ce۳+ ، Mixed non-aqueous s olvents ، Conductometry