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Electronic and Magnetic Properties of a Gadolinium(III) Schiff Base Complex

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Title Electronic and Magnetic Properties of a Gadolinium(III) Schiff Base Complex
 
Creator UPADHYAY, A
DAS, C
SHANMUGAM, M
LANGLEY, SK
MURRAY, KS
SHANMUGAM, M
 
Subject Magnetic properties
EPR spectroscopy
Gadolinium
Solid-state structures
Materials science
SINGLE-MOLECULE-MAGNET
DETECT PROTEASE ACTIVITY
DISTANCE MEASUREMENTS
IMAGING APPLICATIONS
F-19 MRI
GD-III
SPIN
EPR
BEHAVIOR
PROBES
 
Description A mononuclear Gd-III Schiff base complex of formula [Gd(HL)(2)-(NO3)(3)] (1), where HL = 2-methoxy-6-[(E)-phenyliminomethyl]phenol, has been isolated and its structure was determined by single-crystal X-ray diffraction. H-1 NMR spectroscopic data reveal the zwitterionic nature of the HL ligand upon coordination with the Gd-III ion. Direct current (dc) magnetic susceptibility and X-band EPR measurements were performed to probe the electronic and magnetic properties of complex 1. The susceptibility and magnetization data were fitted simultaneously, resulting in spin-Hamiltonian parameters: S = 7/2, g = 2.018, and D = 0.108 cm(-1). The extracted parameters are in good agreement with the values obtained by fitting the temperature-dependent polycrystalline X-band EPR spectra of 1 (S = 7/2, g = 2.005, and D = 0.0815 cm(-1); E/D = 0.08). EPR dilution experiments performed on 1 indicates strongly that the anisotropy arises solely from the Gd-III ion with undetectably small or no contribution from spin-spin exchange interactions.
 
Publisher WILEY-V C H VERLAG GMBH
 
Date 2014-12-28T11:17:24Z
2014-12-28T11:17:24Z
2014
 
Type Article
 
Identifier EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, (26)4320-4325
1434-1948
1099-0682
http://dx.doi.org/10.1002/ejic.201402219
http://dspace.library.iitb.ac.in/jspui/handle/100/16337
 
Language English