Synthesis, structures and magnetic properties of di- and tetranuclear manganese complexes derived from a 3-methoxysalicylaldehyde benzoylhydrazide ligand

Two new manganese complexes with multidentate 3-methoxysalicylaldehyde benzoylhydrazide ligand have been synthesized and structurally characterized. Variations of the reaction conditions (namely, the base, solvent or the counter ion) lead to drastic changes in the nature of the resulting coordination complexes. Depending on the anions involved a di- and a tetranuclear manganese structures are obtained. The magnetic properties of both complexes have been investigated, which show that the different complexes exhibit antiferromagnetic interactions.