T. Dziembowska et al., PHYSICOCHEMICAL PROPERTIES OF CU(II) COMPLEXES OF BIS-SALICYLIDENE-1,2-PHENYLENEDIAMINE AND IS-(3,5-DICHLOROSALICYLIDENE)-1,2-PHENYLENEDIAMINE, Polish Journal of Chemistry, 70(11), 1996, pp. 1425-1434
The powder samples of Cu(II) complexes of bis-salicylidene-1,2-phenyla
nediamine (complex I) and is-(3,5-dichlorosalicylidene)-1,2-phenylened
iamine (complex II) have been prepared and investigated by magnetic, I
R, UV/VIS and EPR methods. From IR similar chemical structures for bot
h complexes have been proposed. The electronic spectra support the squ
are-planar geometry of both complexes. Magnetic susceptibility of comp
lex I has shown typical paramagnetic behaviour for spin S = 1/2 with s
ome ferromagnetic interaction, but no ferromagnetic order down to 1.7
K. The observed EPR spectra for both complexes are dominated by resona
nces arising from coupled pairs of copper ions in the temperature rang
e investigated.