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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
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
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0975(Online); 0376-4710(Print)
Source:IJC-A Vol.50A(09-10) [September-October 2011]

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