Synthesis, spectroscopic, magnetic and EPR studies and crystal structure of di-mu-(N-phenyl-N-methoxy-2-pyridinamine)bis[(NN) copper(II)]perchlorate,NN=2,2 '-bipyridyl or 1,10-phenanthroline
Jm. Seco et al., Synthesis, spectroscopic, magnetic and EPR studies and crystal structure of di-mu-(N-phenyl-N-methoxy-2-pyridinamine)bis[(NN) copper(II)]perchlorate,NN=2,2 '-bipyridyl or 1,10-phenanthroline, INORG CHIM, 303(2), 2000, pp. 256-264
Two new binuclear copper(II) complexes of formula [{Cu(bipy)}(2){mu-Ph(OCN2
)Npy}(2)](ClO4)(2) (1) and [{Cu(phen)}(2){mu-Ph(OCH2)Npy}(2)](ClO4)(2) (2)
(bipy = 2,2'-bipyridine, phen = 1, 10-phenanthroline and Ph(OCH2)Npy = N-ph
enyl-N-methoxy-2-pyridinamine) have been prepared and characterized by chem
ical analysis, X-ray diffraction on single crystals, conductance measuremen
ts and IR and electronic spectroscopies. The copper environment in both com
plexes is distorted square pyramidal with the two alpha-diamine nitrogens a
nd the two methoxo oxygens building the equatorial plane and the pyridine-n
itrogen occupying the axial position. Magnetic susceptibility measurements
in the temperature range 4.4-291 K reveal the occurrence of ferro(2J = + 10
cm(-1)) (1) and antiferromagnetic (2J = - 98 cm(-1)) (2) interactions. Sig
nals of the triplet state are observed in the EPR spectra of both compounds
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