Polymeric monovalent and divalent copper sulfates with 4,4′-bipyridine: [Cu2(SO4)(4,4′-bipy)2 · 6H2O]n and [Cu(SO4)(4,4′-bipy)(H2O) · 0.5H2O]n

Two new composite inorganic–organic materials from the copper/sulfate/4,4′-bipyridine family have been isolated and structurally characterized. The structure of the monovalent compound exhibits double chains in which the two parallel –Cu–bipy– chains are interconnected through sulfate bridges. The divalent polymer consists of two-dimensional interwoven networks that are stacked together by hydrogen bonding between the layers.