Abstract
A new oxamido-bridged trinuclear copper(II) complex [(CuL)2Cu](ClO4)2·0.5H2O (L = the dianion of 2,3-dioxo-5,6,14,15-dibenzo-7,13-bis(ethoxycarbonyl)-1,4,8,12-tetraazacyclotetradeca-7,12-diene) has been synthesized by self-assembly and characterized. X-ray diffraction analysis reveals that the title complex is monoclinic, space group P21, with a = 16.213(5), b = 9.811(3), c = 18.802(6) Å, β = 96.790(5)°. The central copper(II) ion lies in a distorted octahedral environment. Terminal coppers have square pyramidal coordination geometry. Magnetic measurements show there is strong antiferromagnetic interaction between the central and the terminal Cu(II) ions.
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