Electronic and magnetic properties of a gadolinium(III) Schiff base complex

Apoorva Upadhyay, Chimnoy Das, Muralidharan Shanmugam, Stuart Langley, Keith Spencer Murray, Maheswaran Shanmugam

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A mononuclear GdIII 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. 1H NMR spectroscopic data reveal the zwitterionic nature of the HL ligand upon coordination with the GdIII 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 GdIII ion with undetectably small or no contribution from spin-spin exchange interactions.

Original languageEnglish
Pages (from-to)4320 - 4325
Number of pages6
JournalEuropean Journal of Inorganic Chemistry
Issue number26
Publication statusPublished - 2014


  • EPR spectroscopy
  • Gadolinium
  • Magnetic properties
  • Materials science
  • Solid-state structures

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