[Cu(Samen)Co(NO2-Phen)2] and [Cu(Sampn)Co(NO2-Phen)2] (H4Samen, H4Sampn, NO2-Phen = N,N'-ethylenedisalicylamide, N,N'-1,2-propylenedisalicylamide, 5-nitro-1,10-phenanthroline, resp.) were prepared Based on elemental analyses, IR and electronic spectra the complexes have a phenoxy-bridged structure and consist of Cu(II) in a planar environment and Co(II) in a distorted octahedron. The complexes were characterized with variable temperature magnetic susceptibility (4-300 K). The exchange integral J = -4.39 cm-1 for [Cu(Samen)Co(NO2-Phen)2] and -3.59cm-1 for [Cu(Sampn)Co(NO2-Phen)2]. A weak antiferromagnetic superexchange interaction operates between the metal ions.

Key words: INFRARED SPECTROPHOTOMETRY, ELEMENTAL ANALYSIS, COPPER COMPLEX, COBALT COMPLEX, ETHANEDIAMINE, PHENANTHROLINE, SALICYLIC ACID P, MAGNETISM, PROPANEDIAMINE, ACID RADICAL