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Title: Ferromagnetic vs antiferromagnetic coupling in structurally analogous binuclear complexes based on salen type ligand
Authors: Pandey, Rampal
Ribas, Joan
Corbella, Montserrat
Pandey, Daya Shankar
Keywords: Coordination chemistry;Supramolecular assembly;Polymetallic complexes;Dinuclear complexes;Schiff bases;Ferromagnetic coupling;Antiferromagnetic coupling;Electrochemical properties;Cryomagnetic properties;Cobalt;Copper;Nickel;Zinc;Cadmium
Issue Date: Sep-2011
Publisher: NISCAIR-CSIR, India
Abstract: Syntheses of the dinuclear complexes [Co(C23H18N2O2)]2 (1), [Cu(C23H18N2O2)]2.H2O (2), [Ni(C23H18N2O2)]2 (3), [Zn(C23H18N2O2)]2 (4) and [Cd(C23H18N2O2)]2 (5) containing the Schiff base ligand N,N′-bis(2-hydroxybenzilidene)-2,4,6-trimethylbenzene-1,3-diamine have been described. The complexes under investigation have been characterized by elemental analyses, IR, NMR (1H, 13C), electronic absorption, emission and EPR spectral studies. The structure of (1) has been determined by X-ray single crystal analyses. Variable temperature magnetic susceptibility measurements on (1) and (2) reveal that the former displays antiferromagnetic coupling (J = -0.21 ± 0.1 cm-1), while the latter exhibits ferromagnetic coupling (J = + 1.23 ± 0.1 cm-1).
Page(s): 1450-1456
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.50A(09-10) [September-October 2011]

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