A mixed-valence [Co(II) (4)Co(III) (2)] cluster with defect disk-shaped topology

The employment of the new Schiff base ligand 2-[(4-chloro-2-hy­droxy­benzyl­idene­amino)­meth­yl]phenol (H(2) L) bearing O(2)N donors for the preparation of a novel Co(6) 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), [Co(II) (4)Co(III) (2)(C(14)H(10)ClNO(2))(4)(CH(3)COO)(2)(CH(3)O)(4)], was obtained using Co(CH(3)COO)(2)·4H(2)O and H(2) L 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 CH(3)COO(−) units and six phenolate O atoms of four L (2−) ligands to form a defect disk-shaped topology. DC magnetic susceptibility investigations revealed the existence of anti­ferromagnetic inter­actions in the Co(6) cluster.