Constructing octa- and hexadecanuclear manganese clusters from tetrahedral Mn~(III)_3Mn~(II) cores bridged by quinquedentate Schiff base and versatile azide groups

摘要

Reactions of MnX_2 meltsalt (X = Cl and ClO_4) 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~(III)_3Mn~(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.