Synthesis and structure of a trans-oxpn-bridged binuclear copper(II) complex

A novel complex [(CuL)(2)(trans-oxpn)](CIO4)2(.)2DMIF, where oxpn is the dianion of N,N'-bis-(3-aminopropyl)oxamide and L = 1,10-N,N-fluorenone, was synthesized by the reaction of Cu(CIO4)2-6H(2)O with Cu(oxpn) and L in the mixed solvent and characterized by IR spectra and elemental analysis. A single-crystal X-ray study shows that the complex is a four coordinated copper(II) with a plane square environment compound. The crystal is tri-clinic, space group p-1, with unit cell parameters: a = 9.03960(10) angstrom, b= 11.0938(3) angstrom, c = 11.3864(3) angstrom, alpha = 106.97(10)degrees, beta = 97.8450(10)circle, gamma = 90.1180(10)degrees, V = 1080.87(4) angstrom(3), Z = 1, Mr = 1036.78, Dc = 1.593 Mg/m(3), mu = 1.185 mm(-1), F(000) = 532, T = 293(2) K, R = 0.0548, wR = 0.1323 for 3707 reflections with I > 2 sigma(I).