Synthesis, Characterization and Antiferromagnetic Interaction in Oxalato-Bridged Chromium(III)-Chromium(III) Binuclear Complexes

• Autorzy: Wang S. , Li Y. , Yan C.
• Języki publikacji: EN

Abstrakty

EN

Two new mi-oxalato-bridged binuclear chromium(III) complexes, [Cr2(ox)(salen)(bpy)2]- (NO3)2 (1) and [Cr2 (ox)(salen)(phen)2](NO3)2 (2) [where salen = N,N'-ethylenebis- (salicylideneiminate), ox = oxalato, bpy = 2,2'-bipyridine and phen = 1,10-phenanthroline], have been synthesized by the strategy of 'complex as ligand', and characterized by elemental analyses, molar conductance and magnetic moments of room-temperature measurements, and spectroscopic studies. It is proposed that the two complexes have extended ox-bridged structures consisting of two chromium(III) ions, each in an octahedral environment. The two complexeswere further characterized by variable temperature magnetic susceptibility (4.2~300 K) measurements and the observed data were successfully simulated by the equation based on the spin Hamiltonian operator, H= - 2JS S 1 2 giving the exchange integrals J = -2.78 cm-1 for (1) and J = -3.85 cm-1 for (2). This result indicates the presence of weak antiferromagnetic interaction between the metal ions within each molecule.

Słowa kluczowe

EN

mi-oxalato-bridge; chromium(III); binuclear complexes; antiferromagnetic interaction

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2006
• Tom: Vol. 80, nr 6
• Strony: 865--872
• Opis fizyczny: Bibliogr. 29 poz., rys.

Twórcy

autor

Wang S.

autor

Li Y.

autor

Yan C.

• Binzhou Vocational College, Binzhou, Shandong, 256624, P. R. China

Bibliografia

• 1. Gatteschi D., Kahn 0., Miller J.S. And Palacio F. (Eds.), „Molecular Magnetic Materials „, NATO AST Series, Kluwer, Dordrecht, (1991).
• 2. Chang S.H. And Youngkyu D., Inorg. Chem., 36,5684 (1997).
• 3. Li Y.T, Yan C.W. And Guan H.S., Polyhedron, 24,3223 (2003).
• 4. Li Y.T., Yan C.W., Wu Z.Y. and Zhu C.Y., J. Magnetism and Magnetic Materials, 292, 418 (2005).
• 5. Eddaoudi M., Kim J., Wachter J.B., Chae H.K., O'Keeffe M. and Yaghi O.M., J. Am. Chem. Soc., 123, 4368 (2001).
• 6. Barthelet K., Riou D., Nogues M. and Ferey G., Inorg. Chem., 42, 1739 (2003).
• 7. Saalfrank R.W., Trummer S., Reimann U., Chowdhry M.M., Hampel F. and Waldmann O., Angew. Chem., Int. Ed. Engl., 39, 3492 (2000).
• 8. Solomon F.I., Brunold T.C., Davis M.Z., Kemsley J.N., Lee S.-K., Skulan A.J., Yang Y.S. and Zhou J., Chem.Rev., 100, 235(2000).
• 9. Benelli C. and Gatteschi D., Chem. Rev., 102, 2369 (2002).
• 10. Daiguebonne C., Guillou D., Kahn M.L., Kahn O., Oushoorn R.L. and Boubekeur K., Inorg. Chem., 40,176(2001).
• 11. Cortes R., Urtiaga M.K., Lezama L., Arriortua M.I. and Rojo T., Inorg. Chem., 33, 829 (1994).
• 12. Yu R, Journaux Y. and Kahn O., Inorg. Chem., 28, 100 (1989).
• 13. Curtis N.F., J. Chem. Soc., 1584 (1968).
• 14. Coronado E., Gomez-Garcia C.J., Nuez A., Romero F.M., Rusanov E. and Stoeckli-Evans H., Inorg. Chem., 41, 4615 (2002).
• 15. Coronado E., Galan-Malcaros J.R., Gimenez-Saiz C., Gomez-Garcia C.J. and Ruiz-Perez C., Eur. J. Inorg. Chem., 2290 (2003).
• 16. Loret F., Julve M., Miquel M., Castro L, Latorre J., Faus J., Solans X. and Badarau M., J. Chem. Soc., Dalton Trans., 729 (1989).
• 17. Inskeep R.G. and Bjerrum J., Acta Chem. Scand., 15, 62 (1961).
• 18. Selwood P.W., "Magnetochemistry", Interscience, N.Y., pp.78-91 (1956).
• 19. Sinn E., in "BiologicalandInorganic Copper(H) Chemistry", Karlin K.D. and Zubieta J. (Eds.), Adenine Press, Guilderland, N.Y. (1986).
• 20. Li Y.T., Yan C.W. and Guan H.S., Synth. Met., 144, 69 (2004).
• 21. Geary W.J., Coord. Chem. Rev., 7, 81 (1971).
• 22. Nakamoto K., "Infrared and Raman Spectra of Inorganic and Coordination Compounds", Wiley, N. Y. (1986).
• 23. Kahn O., Angew. Chem., Int. Edit. Engl., 24, 384 (1985).
• 24. Lever A.B.P., "Inorganic Electronic Spectroscopy", Elsevier Science Publishers B. V., Amsterdam, Oxford, N. Y., Tokyo (1984).
• 25. Singli B. and Sahaip R, Synth. React. Inorg. Met.-Org. Chem., 28, 61 (1998).
• 26. Lambert S.L., Spiro C.L., Gagne R.R. and Hendrickson D.N., Inorg. Chem., 21, 68 (1982).
• 27. Bian H.D., Gu W., Xu J.Y., Bian F., Yan S.R, Liao D.Z., Jiang Z.H. and Cheng R, Inorg. Chem., 42,4265 (2003).
• 28. Julve M., Verdaguer M., Gleizes A., Philoche-Levisalles M. and Kahn O., Inorg. Chem., 23, 3808 (1984).
• 29. Bencini A., Bianchi A., Poli R., Garcia-Espana E., Julve M. and Marcelino V, J. Chem. Soc., Dalton Trans., 7, 2213 (1990).