It is well known the interest of the chemical industry towards oxidation reactions [1].In this context,complexes of Mn(II)occupy a privileged role,for their well-known ability to activate hydrogen peroxide through group transfer mechanisms [1].The ideal catalysts meets certain parameters: stability,low environmental impact,efficiency at low temperatures and cost-effectiveness.Furthermore,it should present compatibility with aqueous systems,and also the ability to interface with apolar environments,given the organic nature of typical substrates.With regard to this last consideration,it is well known that the insertion of catalysts in micellar systems has a beneficial effect on their performance [2].On this basis,and in order to satisfy the just mentioned constraints,we have started a systematic study on the synthesis and characterization of Mn(II)complexes containing ligands derived from chelidamic acid [3] with tailored ponytails(In-H2).The complexes will differ in the length of the chain present on the pyridine ring, introduced in order to verify its effect on aggregation in aqueous systems and disclose any beneficial resulton their ability to activate the hydrogen peroxide.The poster will present the synthesis of the complexes, and preliminary studies on their chemo-physical characterization and reactivity.