Crystal structure of tetrakis(μ-2-hydroxy-3,5-diisopropylbenzoato)bis[(dimethyl sulfoxide)copper(II)]

Metal complexes of 3,5-diisopropylsalicylate are reported to have anti-inflammatory and anti-convulsant activities. The title binuclear copper complex, [Cu-2(C13H17O3)(4)(C2H6OS)(2)] or [Cu(II)(2)(3,5-DIPS)(4)(DMSO)(2)], contains two five-coordinate copper atoms that are bridged by four 3,5-diisopropylsalicylate ligands and capped by two axial dimethyl sulfoxide (DMSO) moieties. Each copper atom is attached to four oxygen atoms in an almost square-planar fashion, with the addition of a DMSO ligand in an apical position leading to a square-pyramidal arrangement. The hydroxy group of the diisopropylsalicylate ligands participates in intramolecular O-H center dot center dot center dot O hydrogen-bonding interactions.