Synthesis and magnetism of heterobinuclear Cu(II)-Fe(II) complexes bridges by N,N'-bis(3-aminopropyl)oxamidocopper(II)

• Autorzy: Li Y.T. , Yan C.W. , Zhu X.D. , Liao D.Z.
• Języki publikacji: EN

Abstrakty

EN

Four new my-oxamido heterobinuclear complexes have been synthesized and characterized, namely[Cu(oxpn)Fe(L)2]SO4, here oxpn denotes the N,N'-bis(3-aminopropyl)oxamido dianion and L represents 1,10-phenanthroline (phen); 5-nitro-1,10-phenanthroline (NO2-phen); 5-chloro-1,10-phenanthroline (Cl-phen) and 2,2'-bipyridine (bpy). Based on the elemental analyses, spectroscopic studies, magnetic moments (at room temperature) and molar conductivity measurements, extended oxamido-bridged structures consisting of a copper(II) and an iron(II) ions, which have a square planar environment and an octahedral environment, respectively, are proposed for these complexes. The [Cu(oxpn)Fe(bpy)2]SO4 (1) and [Cu(oxpn)Fe(phen)2]SO4 (2) complexes have been characterized by variale temperature magnetic susceptibility (4.2-300K) 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) oion, H=-2J S(1)xS(2) - DS(z), giving the exchange integrals J=-21.8 cm(-1) for (1) and J=-23.2 cm(-1) for (2). These results are commensurate with antiferromagnetic interactions between adjacent metal ions within each molecule.

Słowa kluczowe

EN

copper(II); iron(II); my-oxamido; heterobinuclear complex; magnetism

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 1998
• Tom: Vol. 72, nr 3
• Strony: 485--491
• Opis fizyczny: Bibliogr. 28 poz., tab., wykr.

Twórcy

autor

Li Y.T.

autor

Yan C.W.

autor

Zhu X.D.

autor

Liao D.Z.