Synthesis and Magnetic Analysis of mi-Oxamido-Bridged Copper(II)-Iron(II) Heterodinuclear Complexes

• Autorzy: Li Y. , Yan C. -W. , Guan H. -S.
• Języki publikacji: EN

Abstrakty

EN

Five new copper(II)-iron(II) heterodinuclear complexes bridged by the dianion of N,N_-bis[3-(dimethylamino)propyl]oxamido (dmoxpn) and end-capped with 2,2_-bipyridine (bpy); 1,10-phenanthroline (phen); 5-nitro-1,10-phenanthroline (NO2-phen); 5-chloro-1,10-phenanthroline (Cl-phen) or 5-bromo-1,10-phenanthroline (Br-phen); namely [Cu(dmoxpn)FeL2](ClO4)2 (L = bpy, phen, NO2-phen, Cl-phen, Br-phen), have been synthesized and characterized. Based on elemental analyses, magnetic moments (at room temperature), molar conductivity measurements, and spectroscopic studies, extended oxamido-bridged structures consisting of a copper(II) ion and an iron(II) ion, which have a square-planar environment and an octahedral environment, respectively, are proposed for these complexes. The [Cu(dmoxpn)Fe(bpy)2](ClO4)2 (1) and [Cu(dmoxpn)Fe(phen)2](ClO4)2 (2) 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 = 2JS S DS 1 2 Z1 2 Ĺ , giving the exchange integrals J = -15.9 cm-1 for (1) and J = -17.5 cm-1 for (2). These results indicated that the spin coupling between the adjacent copper(II) and iron(II) ions through oxamido-bridge in both complexes (1) and (2) is antiferromagnetic. The influence of methyl (-CH3) 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; magnetism; synthesis

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2003
• Tom: Vol. 77 / nr 2
• Strony: 137--145
• Opis fizyczny: Bibliogr. 30 poz., rys.

Twórcy

autor

Li Y.

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

autor

Yan C. -W.

• Marine Life College, Ocean University of Qingdao, Qingdao, Shandong, 266003, P. R. China

autor

Guan H. -S.

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

Bibliografia

• 1. Kahn O., Struct. Bond. (Berlin), 68, 89 (1987).
• 2. Matsumoto N., Ohba M., Mitsumi M., Inoue K., Hashimoto Y. and Okawa H., Mol. Cryst. Liq. Crys 233, 299(1993).
• 3. Gatteschi D., Kahn O., Miller J.S. and Palacio F. (Eds.), Molecular Magnetic Materials, NATO ASI Series, Kluwer, Dordrecht, (1991).
• 4. Kahn O., Molecular Magnetism, NY, Verlag-Chemie, (1993).
• 5. Baron V., Gillon B., Plantevin O., Cousson A., Mathoniere C., Kahn O., Grand A., Ohrstrom L. and Delley B., J. Am. Chem. Soc., 118, 11822 (1996).
• 6. Li Y.T., Yan C.W., Miao S.H. and Liao D.Z., Polyhedron, 15, 2491 (1998).
• 7. Ojima H. and Nonoyama K., Coord. Chem. Rev., 92, 85 (1988).
• 8. Yu P., Kahn O., Nakatani K., Codjovi E., Mathoniere C. and Sletten J., J. Am. Chem. Soc., 113, 6558 (1991).
• 9. Lloret F., Julve M., Ruiz R., Joumaux Y., Nakatani K., Kahn O. and Sletten J., Inorg. Chem., 32. 27 (1993).
• 10. Yu P., Kahn O., Sletten J., Renard J.-P., Georges R., Gianduzzo J.-C., Curely J. and Xu Q., Inorg. Chem., 27,47(1985).
• 11. Li Y.T., Yan C.W., Zhu X.D. and Liao D.Z., Polish J. Chem., 72, 485 (1998).
• 12. Zhang Z.Y., Liao D.Z., Jiang Z.H., Hao S.Q., Yao X.K., Wang H.G. and Wang G.L., Inorg. Chim. Acta, 173, 201 (1990).
• 13. Liao D.Z., Li L.C., Jiang Z.H., Yan S.P. and Wang G.L., Trans. Met. Chem., 17, 356 (1992).
• 14. Ma S.L., Jiang Z.H., Liao D.Z., Yan S.P. and Wang G.L., Polyhedron, 12, 1523 (1993).
• 15. Mathoniere C., Kahn O., Daran J.-C., Hilbig H. and Kohler H., Inorg. Chem., 32, 4057 (1993).
• 16. Benelli C., Fabrett A.C. and Giusti A., J. Chem. Soc., Dalton Trans., 409 (1993).
• 17. Bethrcnt J.R. and Madan S.K., J. Inorg. Nucl. Chem., 20, 159 (1950).
• 18. Ojima H. and Yamada Y., Bull. Chem. Soc. Jpn., 43, 3018 (1970).
• 19. Selwood P.W., "Magnetochemistry”, Interscience, N.Y., p. 78-79 (1956).
• 20. Gunter M.J., Berry K.J. and Murray K.S., J. Am. Chem. Soc., 106, 4227 (1984).
• 21. Geary W.J., Coord. Chem. Rev., 7, 81 (1971).
• 22. Nakamoto K., Infrared and Raman Spectra ofInorganic and Coordination Compounds, 4th Ed., Wiley, NY, (1986).
• 23. Radecka-Paryzek W., Inorg. Chim. Acta, 34, 5 (1970).
• 24. Thimmaiah K.N., Lloyd W.D. and Chandrappa G.T., Inorg. Chim. Acta, 106, 81 (1985).
• 25. Lever A.B.P., Inorganic Electronic Spectroscopy, 2nd Ed., Elsevier, Amsterdam, 1984.
• 26. Lambert S.L., Spiro C.L., Gagne R.R. and Hendrickson D.N., Inorg. Chem., 21, 68 (1982).
• 27. Hay P.J., Thibeault J.C. and Hoffman R., J. Am. Chem. Soc., 97, 4884 (1975).
• 28. Kahn O. and Chariot M.F., Nouv. J. Chem., 4, 567 (1980).
• 29. Morgenstem-Badarau I., Rerat M., Kahn O., Jaud J. and Galy J., Inorg. Chem., 21, 3050 (1982).
• 30. Brewer G. and Sinn E., Inorg. Chem., 26, 1592 (1987).