Synthesis and Crystal Structure of a Dinuclear Cu(II) Complex with N,N,N ',N '-Tetrakis(2-pyridylmethyl)-1,4-xylenediamine

A dinuclear Cu(II) complex, [Cu-2(OAc)(2)(tpxn)(H2O)(2)](PF6)(2) [tpxn = N,N,N',N'-tetrakis(2-pyridylmethyl)-1,4-xylenediamine], was synthesized and characterized by single-crystal X-ray analysis. The compound crystallizes in the monoclinic space group P2(1)/c with a = 9.310(4), b = 10.880(4), c = 20.628(8)angstrom, beta = 91.581(6)degrees, V = 2088.6(14)angstrom(3), D-caled = 1.704 g/cm(3), and Z = 4. The R1 [I > 2 sigma(I)] and wR2 (all data) values are 0.0343 and 0.0923, respectively, for all 4731 independent reflections. The complex contains two square-pyramidal Cu(II) ions bound to both terminal tridentate sites of tpxn.