A new copper(II) coordination polymer containing chains of interconnected paddle-wheel antiferromagnetic clusters.

The construction of supramolecular architectures based on inorganic-organic coordination frameworks with weak noncovalent interactions has implications for the rational design of functional materials. A new crystalline binuclear copper(II) one-dimensional polymeric chain, namely catena-poly[[[tetrakis(μ-4-azaniumylbutanoato-κO:O')dicopper(II)(Cu-Cu)]-μ-chlorido-[diaquadichloridocopper(II)]-μ-chlorido] bis(perchlorate)], {[CuCl(CHNO)(HO)](ClO)}, was obtained by the reaction of 4-aminobutyric acid (GABA) with CuCl·2HO in aqueous solution. The structure was established by single-crystal X-ray diffraction and was also characterized by IR spectroscopy and magnetic measurements.