Constructing octa- and hexadecanuclear manganeseclusters from tetrahedral MnIII3MnII cores bridged by quinquedentate Schiff base and versatile azidegroups

Abstract

Reactions of MnX₂ meltsalt (X = Cl and ClO₄) and a quinquedentate Schiff base ligand together with its coligand azides in MeOH produced the unprecedented assembly of novel octa- and hexadecanuclear manganese clusters containing two and four alternant tetrahedral Mn^III₃Mn^II cores bridged by Schiff base ligands and versatile azides groups. The magnetic measurements on both compounds indicate dominant antiferromagnetic interactions between the metal centers. This synthetic approach may suggest a promising pathway to the design of novel Schiff base-based polynuclear manganese clusters and novel magnetic materials.