International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

New Ferromagnetically Coupled Dicopper (II) Complexes with σ − bonding bridge

Author Affiliations

  • 1Applied Chemistry Department, Faculty of Technology and Engineering, Kalabhavan, The Maharaja Sayajirao University of Baroda, Vadodara- 390001, INDIA

Res.J.chem.sci., Volume 5, Issue (10), Pages 43-50, October,18 (2015)


Four ternary binuclear complexes, [Cu(A),pichx](ClO (1 and 2) and [Cu(A)pichx](3 and 4) have been synthesized. In the complexes two metal centers are held together by - bonding bridge i.e. pichx= N,N-bis(2-pyridylcarbonyl)-1,6-diaminohexane and A2 is 2,2-bipyridyl or 1,10-phenanthroline or 2-hydroxybenzoic acid or 5-bromo-2-hydroxybenzoic acid coordinated to the metal ions as non-bridging ligands. The complexes were characterized by elemental analyses, conductance, magnetic susceptibility measurement, IR and electronic spectroscopy. The ESI-mass of the complex is consistent with the binuclear formulation. The complexes are observed to undergo a weak to moderate ferromagnetic coupling between two copper (II) ions.


  1. Coronado E., Galan-Mascaros J.R., Gomez-Garcia C.J.and Laukhin V, Coexistence of ferromagnetism and metallic conductivity in a molecule-based layered compound, Nature, 408, 4474492000) 2.Sato E., Iyoda T., Fujishima A. and Hashimoto K., Photoinduced magnetization of a cobalt-iron cyanide, Science, 272704-705 (1996)
  2. Sato E., Iyoda T., Fujishima A. and Hashimoto K., Photoinduced magnetization of a cobalt-iron cyanide, Science, 272, 704-705 (1996)
  3. Miller J.S. and Drillon M., Eds, Magnetism: Molecules to Materials II. Nanosized Magnetic Materials; Wiley-VCH: Weinheim, (2002)
  4. Gatteschi D. and Sessoli R., Quantum tunneling of magnetization and related phenomena in molecular materials, Angew. Chem., Int. Ed., 42, 268297 (2003)
  5. Calzado C.J., Clemente-Juan J.M., Coronado E., Gaita-Arino A. Suaud N., Role of the electron transfer and magnetic exchange interactions in the magnetic properties of mixed-valence polyoxovanadate complexes, Inorg. Chem.,47, 5889-5901 (2008)
  6. Sorai M., Nakazawa Y., Nakano M. and Miyazaki Y., Calorimetric Investigation of Phase Transitions Occurring in Molecule-Based Magnets, Chem. Rev., 113, 41-122 (2013)
  7. Venegas-Yazigia D., Aravena D., Spodine E., Ruiz E.and Alvarez S., Structural and electronic effects on the exchange interactions in dinuclear bis(phenoxo)-bridged copper(II) complexes, Coord. Chem. Rev., 254, 2086-2095 (2010)
  8. Stylianou M., Drouza C., Viskadourakis Z., Giapintzakis J. and Keramidas A.D., Synthesis, structure, magnetic properties and aqueous solution characterization of p-hydroquinone and phenol iminodiacetate copper (II) complexes, Dalton Trans., 6188-6204 (2008)
  9. Ruiz E., Alemany P., Alvarez S. Cano J., Structural modeling and magneto-structural correlations for hydroxo-bridged copper (II) binuclear complexes, Inorg. Chem.,36, 3683-3688 (1997)
  10. Hatfield W.E., Comments Inorg. Chem, 105121 (1981)
  11. Melnik M., Study of the relation between the structural data and magnetic interaction in oxo-bridged binuclear copper compounds, Coord. Chem. Rev.,42, 259293 (1982)
  12. Kato M. and Muto Y., Factors affecting the magnetic properties of dimeric copper (II) complexes, Coord. Chem. Rev.,92, 4583 (1988)
  13. Felthouse T.R. and Hendrickson D.N., Magnetic exchange interactions in binuclear transition-metal complexes, 17. Benzidine and p-phenylenediamine, extended aromatic diamine bridging ligands in binuclear copper(II) 2,2',2''-triaminotriethylamine and vanadyl bis(hexafluoroacetylacetonate) complexes, Inorg. Chem.,17(9), 2636-2648 (1978)
  14. Chaudhury P., Order K., Wieghardt K., Ghering S., Hasse W., Nuber B. and Weiss J., Moderately strong intramolecular magnetic exchange interaction between the copper (II) ions separated by 11.25.ANG. in [LCu(OH(.eta.-terephthalato)](ClO (L = 1,4,7-trimethyl-1,4,7-triazacyclononane), J. Am. Chem. Soc., 110, 36573658 (1988)
  15. Glerup J., Goodson P.A., Hodgson D.J. and Michelsen K., Magnetic Exchange through Oxalate Bridges: Synthesis and characterization of (-Oxalato)dimetal (II) complexes of Manganese, Iron, Cobalt, Nickel, Copper, and Zinc, Inorg. Chem.,34, 62556264 (1995)
  16. Real J.A., Mollar M., Ruiz R., Faus J., Lloret F., Julve M. and Levsalles M.P., Oxamidato complexes. Part 6. Complex formation between copper (II) and N,N-bis[2(dimethylamino)ethyl]oxamide (H dmaeoxd). Preparation, crystal structure, and magnetic properties of [Cu (dmaeoxd)(NCO) (HO) ], Dalton Trans, 14831488 (1993)
  17. Calvo R., Steren C.A., Piro O.E., Rojo T., Zungia F.J. and Castellano E.E., Crystal structure and magnetic properties of diaqua(L-aspartato)copper(II), Inorg. Chem.,32, 60166022 (1993)
  18. Gandhi J.B., Kulkarni N.D., Study of uranyl complexes with new binucleating ligands involving amide and imine coordinating sites, Polyhedron, 18, 17351742 (1999)
  19. Nakamoto K., Infrared and Raman Spectra of Inorganic and Coordination Compounds : Part B, 5th Eds, Wiley – Interscience New York, (1997)
  20. Clauss A.W., Wilson S.R., Buchanan R.M., Pierpont C.G. and Hendrickson D.N., Magnetic exchange interactions propagated by saturated bridges in binuclear dicyclopentadienyltitanium(III) complexes,Inorg. Chem,22, 628-636 (1983)
  21. Liu Z., Lu Z., Zhang D., Jiang Z., Li L., Liu C. Zhu D., New Types of Heterospin Complexes from trans-Oxamido-Bridged copper (II) binuclear units and nitronyl nitroxide radicals: Crystal structure and magnetic characterization, Inorg. Chem., 43, 66206627 (2004)