Di-2-pyridyl Ketone/Benzoate/Azide Combination as a Source of Copper(II) Clusters and Coordination Polymers: Dependence of the Product Identity on the Solvent

The reactions of di-2-pyridyl ketone with Cu(O₂CPh)₂ in the presence of NaN₃ and LiOH have led to an antiferromagnetically coupled (S = 0) Cu^II₆ cluster with a novel core and to (Cu^II₈)_n and (Cu^II₂)_n coordination polymers (the former 1D and the latter 2D) with interesting structures. The cluster or polymer formation depends on the reaction solvent.