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Z. Naturforsch. 2014,
69b, 987 – 994
doi:10.5560/ZNB.2014-4156
A Compound with Coexisting Mono- and Dinuclear Cu(II) Complexes Hosting a New Water Tape Cluster (H2O)22
Center of Applied Solid State Chemistry Research, Ningbo University, Ningbo, 315211, P. R. China
Reprint requests to Prof. Dr. Yue-Qing Zheng. Fax: Int. +574/87600747. E-mail:
yqzhengmc@163.com
Received July 12, 2014 / published online October 12, 2014
A new compound containing mono- and dinuclear Cu(II) complexes, [Cu2(phen)2(H2O)2(OH)2][Cu(phen)2(CO3)]2(HCO3)2 · 22H2O] (phen = 1,10-phenanthroline), has been prepared and characterized by X-ray diffraction analysis, thermoanalytical techniques and temperature-dependent magnetic susceptibility measurements. The hydroxo-bridged dinuclear [Cu2(phen)2(H2O)2(OH)2]2+ complex cations and the mononuclear [Cu(phen)2(CO3)] complex molecules are assembled via π···π stacking interactions into layers. A novel water tape containing (H2O)22 cluster units has been observed in the structure of the title complex. In hydrogen bond interactions HCO3− anions act as donor and acceptor to link the water tapes to form an infinite 2D network parallel to (010). According to the magnetic analyses, the coupling interactions in the dinuclear complex cation is ferromagnetic (J =34.5 cm−1).
Key words: Copper(II) Complex, Hydroxo-bridging, Water Cluster, Magnetic Properties, Supramolecular Assembly