Synthesis and Magnetic Analysis of mi Oxamido-Bridged Cu(II)-Fe(II) Heterodinuclear Complexes

• Autorzy: Li Y. , Zhang G. , Yan C. , Dou J. , Wang D.
• Języki publikacji: EN

Abstrakty

EN

The strategy of "complex as ligand" allowed us to synthesize two new mi-oxamido- bridged heterodinuclear complexes identified as [Cu(bmap)Fe(bpy)2]SO4 (1) and [Cu(bmap)Fe(phen)2]SO4 (2), where bmap represents the N,N'-bis(2-methyl-2-aminopropyl) oxamido dianion; bpy and phen stand for 2,2'-bipyridine and 1,10-phenanthroline, respectively. These complexes are the first examples of copper(II)-iron(II) species bridged by bmap groups. Based on elemental analyses, IR and electronic spectra studies, magnetic moments at room temperature and molar conductivity measurements, these complexes are proposed to have an extended oxamido-bridged structure consisting of planar copper(II) and octahedral iron(II) ions. The two heterodinuclear complexes have been further characterized by variable temperature magnetic susceptibility (4.2-300 K) and the observed data were least-squares fitted to the susceptibility equation derived from the spin Hamiltonian including single-ion zero-field interaction for the iron(II) ion,H=-2JS1 . S2-DS2 Z1 , giving the exchange integrals J = -18.9 cm-1 for (1) and J = -20.1 cm-1 for(2). These results indicated that the spin coupling between the adjacent copper(II) and iron(II) ions through the oxamido-bridge in both complexes (1) and (2) is antiferromagnetic. The influence of methyl substituents in the bridging ligand on magnetic interactions between the metal ions of this kind of complexes is also discussed

Słowa kluczowe

EN

mi-oxamido-bridge; copper(II); iron(II); heterodinuclear complexes; magnetic properties

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2005
• Tom: Vol. 79 / nr 9
• Strony: 1405--1413
• Opis fizyczny: Bibliogr. 39 poz., rys.

Twórcy

autor

Li Y.

• Marine Drug & Food Institute, Ocean University of China, 5 Yushan Road,Qingdao, Shandong, 266003, P. R. China
• Department of Chemistry, Liaocheng University, Liaocheng, Shandong, 252059, P. R. China

autor

Zhang G.

• Marine Drug & Food Institute, Ocean University of China, 5 Yushan Road,Qingdao, Shandong, 266003, P. R. China

autor

Yan C.

• Marine Drug & Food Institute, Ocean University of China, 5 Yushan Road,Qingdao, Shandong, 266003, P. R. China

autor

Dou J.

• Department of Chemistry, Liaocheng University, Liaocheng, Shandong, 252059, P. R. China

autor

Wang D.

• Department of Chemistry, Liaocheng University, Liaocheng, Shandong, 252059, P. R. China

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