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

A solution of 2-hy­droxy-3,5-bis­(1-methyl­eth­yl)benzoic acid copper(II) hydrate (C26H34CuO6·xH2O), also known as copper(II) 3,5-diiso­propyl­salicylate hydrate, in dimethyl sulfoxide (DMSO) affords crystals of tetra­kis-3,5-diiso­propyl­salicylatobis-di­methyl­sulfoxido­dicopper(II), [Cu(II)2(3,5-DIPS)4(DMSO)2], upon evaporation. The structure has an empirical formula of [Cu2(C13H17O3)4(C2H6OS)2] and consists of a centrosymmetric binuclear copper complex surrounded by four 3,5-diiso­propyl­salicylate ligands. 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.