Synthesis and spectroscopic, magnetic and EPR studies of di-mu-hydroxo-bis[(NN)(N-phenyl-2-pyridinamine)copper(II)]hexaflourophosphate, with NN=2,2 '-bipyridine or 1,10-phenanthroline. X-ray crystal structure of the 2,2 '-bipyridine complex

Binuclear complexes [{Cu(NN)(PhNHpy)}(2)(mu-OH)(2)](PF6)(2), where NN=2,2'- bipyridine (bipy) or 1,10-phenanthroline (phen), have been synthesized and characterized by chemical analysis, conductance measurements and IR and ele ctronic spectroscopy. The X-ray crystal structure of [{Cu(bipy)(PhNHpy)}(2) (mu-OH)(2)](PF6)(2) shows a distorted square-planar pyramidal coordination for Cu(II), defined by two nitrogen atoms of bipy, two bridging oxygen atom s and the pyridinic nitrogen atom of the ligand. Magnetic susceptibility me asurements (in the 4.8-290 K range) reveal coupling which is antiferromagne tic for the bipy complex (2J=-24.2 cm(-1)) and slightly ferromagnetic for t he phen complex (2J=3.3 cm(-1)). The EPR spectra show the expected triplet signals. (C) 1999 Elsevier Science Ltd. All rights reserved.