SYNTHESIS AND CHARACTERIZATION OF ICHLOROPHENYL)AMINO]BENZENEACETODIAQUODICOPPER(II) DIHYDRATE AND TRAKIS-MU-2-[(2,6DICHLOROPHENYL)AMINO]BENZENEACETO DIMETHYLFORMAMIDODICOPPER(II)

Complexes of diclofenac (L), [CuL(2)(H2O)](2)2H(2)O, and [CuL(2)(DMF)] (2) were prepared by the reaction of the sodium salt of this potent an tiinflammatory drug with CuCl2. The new symmetric binuclear copper(II) complex [CuL(2)(DMF)](2) crystallizes in the monoclinic space group P 2(1)/n with cell constants a = 10.807(1), b = 15.429(2), c = 19.360(2) , beta = 92.508(3), V = 3225(1) Angstrom(3), and Z = 2. The structure was determined from 5456 out of a total of 5768 unique reflections. Th e final values for R(1), (w)R(2), and GOF for all data are 0.0602, 0.1 066, and 1.030, respectively. The crystal structure consists of a binu clear quadruply bridged neutral molecule. The four carboxylato groups from four ligands are in the familar bidentate syn,syn eta(1):eta(1):m u(2) bridging mode. The metal coordination geometry is described as a perfect square bipyramid with a water of dimethyloformamide oxygen occ upying both apical positions. Optical, infrared, electron paramagnetic resonance, magnetic, and electrochemical properties of these complexe s are also reported. (C) 1997 Elsevier Science Inc.