Angular variation of linewidths in single-crystal EPR spectra

Angular variation of linewidths in single-crystal EPR spectra

We present the angular variation of the resonance magnetic fields as well as the angular variation of the linewidths obtained from single-crystal electron paramagnetic resonance spectra of Δ ( + ) [Cr(( − )chxn) 3 λ λ λ ] 3+ (chxn = trans-1,2-cyclohexanediamine) doped into the nitrate salt of the is...

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Veröffentlicht in:Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Molecular and biomolecular spectroscopy, 2006-03, Vol.63 (4), p.836-839
Hauptverfasser: Klitgaard, Søren K., Galsbøl, Frode, Weihe, Høgni
Format: Artikel
Sprache:eng
Schlagworte:
Chromium - chemistry
Copper - chemistry
Crystallization
Electron Spin Resonance Spectroscopy
ESR
Linewidths angular dependence
Models, Molecular
Nitrates - chemistry
Organometallic Compounds - chemistry
Ruthenium - chemistry
Single crystal
Spectrum Analysis
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Zusammenfassung:We present the angular variation of the resonance magnetic fields as well as the angular variation of the linewidths obtained from single-crystal electron paramagnetic resonance spectra of Δ ( + ) [Cr(( − )chxn) 3 λ λ λ ] 3+ (chxn = trans-1,2-cyclohexanediamine) doped into the nitrate salt of the isostructural Rh(III) ion Δ ( + ) [Rh(( − )chxn) 3 λ λ λ](NO3)3⋅3 H 2 O. An analysis of the angular variation of the resonance magnetic fields indicates axial symmetry for the cation. An analysis of the angular variation of the linewidths, on the other hand, reveals that not all the paramagnetic sites have perfect axial symmetry.
ISSN:1386-1425
DOI:10.1016/j.saa.2005.10.012