Solution behavior and magnetic properties of a novel nonanuclear copper(ii) cluster

Abstract

A novel nonanuclear copper(II) nanocluster (Cu9) was constructed from a well-designed multidentate pyrazole–alcohol ligand and using various small anions. The Cu₉ skeleton was found to consist of two similar Cu₅ cluster units sharing one central Cu^II ion and to be protected by the outer organic ligand and auxiliary small anions. The solution behavior of Cu9 was studied in detail by applying the ESI-MS technique. Magnetism analysis implied the presence of antiferromagnetic interactions between the Cu^II ions.