Bulletin of the Chemical Society of Japan · 1969 · 21 citations · 20 references
Natural SciencesChemistryInorganic ChemistryOrganic ChemistrySpectroscopyCoordination ChemistryMagnetic Properties Of SolidsMagnetic SusceptibilityMagnetism Of Inorganic CompoundsMetal-ligand BondingCoordination Compound MagnetismElectronic Spectra Of Transition Metal ComplexesMagnetic Properties Of Coordination ComplexesMagnetic Properties Of Transition Metal ComplexesMagnetic Susceptibility SpectroscopyMagnetism Of Transition Metal ComplexesMolecular MagnetismSpectroscopy Of Transition Metal Complexes
Abstract Complexes with the formula, Cu(\overset1O·C6H4·\overset2CH=N–Ph–X)Cl, where Ph-X is a mono- or disubstituted phenyl group, were prepared. A dimeric structure was postulated for these complexes based on the observed subnormal magnetic moments and the chemical formula. For these complexes, a linear relation was observed to exist between the magnetic moments, μeff25°C, and the d–d band positions, \ ildenumax. The d–d bands of the dimeric complexes with o-substituents appeared at shorter wavelengths than those with m- or p-substituents irrespective of the polar nature of the substituents. A similar ortho-effect was also observed for the magnetic moments; complexes with o-substituents were observed to have smaller moment values than those with m- or p-substituents. The oryho-effect was also observed in the d–d bands of the monomeric bis-complexes Cu(\overset1O·C6H4·\overset2CH=N–Ph–X)2 and their d–d bands when X=o-substituents appeared at shorter wavelengths than those with m- or p-substituents. These ortho-effects decreased for the solution spectra of the monomeric complexes.
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