A mixed-valence [CoII4CoIII2] cluster with defect disk-shaped topology

The employment of the new Schiff base ligand 2-[(4-chloro-2-hydroxybenzylideneamino)methyl]phenol (H2L) bearing O2N donors for the preparation of a novel Co6 cluster is reported. The hexanuclear cobalt complex, namely, di- μ 2-acetatotetrakis{ μ 2-2-[(4-chloro-2-oxidobenzylideneamino)methyl]phenolato}tetra- μ 3-methanolato-tetracobalt(II)dicobalt(III), [CoII4CoIII2(C14H10ClNO2)4(CH3COO)2(CH3O)4], was obtained using Co(CH3COO)2 · 4H2O and H2L as starting materials in MeOH under solvothermal conditions. The six metal ions are linked together by the μ 3-O atoms of four deprotonated MeOH molecules, two CH3COO − units and six phenolate O atoms of four L2 − ligands to form a defect disk-shaped topology. DC magnetic susceptibility investigations revealed the existence of antiferromagnetic interactions in the Co6 cluster.

Source: Acta Crystallographica Section C - August 26, 2022 Category: Chemistry Authors: Yang, H. Fu, Y.-P. Huang, Y. Chen, X.-L. Qiao, D. Cui, H.-L. Tags: hexanuclear complex cobalt metal cluster defect disk-shaped topology crystal structure magnetic properties research papers Source Type: research