Luminescent 2-D Double-layered Polymer, [(CuI)₄(CH₃SCH₃)₃]_∞, Containing Helical Chains Constructed by Flower-Basket-Shaped Cu₄I₄ Clusters

A new route for the synthesis of coordination compounds with dimethyl sulfide ligand is reported; the prepared compound is a novel 2-D framework with a 1-D right-handed and left-handed helical structure, which is unique in the sense that the fundamental units are unusual Cu4I4 clusters.