Crystal structure of di[oxydiacetatozinc(II)]^.4,4′-bipyridine

Because a tridendate dicarboxylato group blockes three coordination sites, the centrosymmetric title zinc oxydiacetate adduct is a binuclear complex. The octahedral geometry is completed by one half of the 4,4'-bipyridine ligand, and by two water molecules that are trans to each other. The dinuclear units are connected by hydrogen bonds; the carboxyl oxygen atoms each form only one hydrogen bond [2.730(3), 2.766(3) Å] and the carbonyl oxygen atoms each form a pair of hydrogen bonds [2.791(4), 2.831(4) Å; 2.811(4), 2.842(4) Å] to furnish a network structure.