A novel penta-nuclear cobalt cluster exhibiting slow magnetic relaxation behavior

Abstract A novel CoII3CoIII2 cluster, namely, [CoII3CoIII2 (HL)6](1), has been successfully obtained by using a multidentate organic ligand via solvothermal method, and further characterized by crystallography, elemental analysis (EA), infrared spectra (IR), powder X-ray diffraction (PXRD) and magnetic study. Structural analysis shows that two different coordination environments of CoII and CoIII ions were existed in the penta-nuclear cobalt cluster. The magnetic measurement reveals that 1 exhibits slow magnetic relaxation behavior under a zero direct current (dc) field.