Abstract
The binuclear metal complex [Cu(μ-exoO2)cyclamCu(bpy)](ClO4)2·H2O (bpy = 2,2′-bipyridine and (exoO2)cyclam = 1,4,8,11-tetraazacyclotradecanne-2,3-dione) has been synthesized and characterized by single-crystal X-ray analysis and spectroscopic and magnetic measurements. The structure consists of homobinuclear [Cu(μ-exoO2)cyclamCu(bpy)]2+ cations, a weakly coordinated water molecule and perchlorate ions. In each binuclear unit, Cu1, coordinated by four nitrogen atoms of the macrocyclic organic ligand is connected to Cu2 via the exo-cis oxygen atoms of the macrocyclic ligand with Cu···Cu separations of 5.151 Å; Cu2 assumes square-pyramidal geometry. Magnetic properties measured at 2–300 K show antiferromagnetic exchange between adjacent copper(II) ions.
Acknowledgements
This work was supported by the National Natural Science Foundation of China (Nos 20471031, 90101028, 203310100) and the Natural Science Key Foundation of Tianjin.