Mössbauer Spectroscopy

Abstract

Introduction Mössbauer Spectroscopy Interpretation of the Parameters Systems with Carbon–Iodine bonds Charge‐Transfer Complexes The Group IV Tetrahalides Conclusion Acknowledgements

Chemically Induced Permanent Magnetism in Au, Ag, and Cu Nanoparticles: Localization of the Magnetism by Element Selective Techniques

“…29 No fitting of the split component of the spectrum shown in Figure 5 achieves values for IS and QS that could directly relate the surface Au atoms to either Au(I) valence state nor any valence state of the Au found in the literature. 30 So, taking into account the XMCD and ESM results, we have considered this component as an unresolved magnetic splitting, smaller than the quadrupole splitting and oriented at a powder-averaged, random angle to the electric field gradient. It has been theoretically calculated and probed experimentally that magnetically split 197 Au Mo ¨ssbauer spectra show eight different transitions with well-determined relative intensities.…”

Thiolate-Induced Structural Reconstruction of Gold Clusters Probed by 197Au Mössbauer Spectroscopy

“…The IS and QS values obtained are 3.04 and 6.67 mm/s, respectively, for the major component and 2.46 and 5.70 mm/s, respectively, for the minor component. 11 According to the correlation between the IS and QS values established for various kinds of Au I and Au III compounds, 12 these components are assigned to Au I sites directly bound to GS ligands. Recently, two structural isomers have been predicted for Au 10 (SCH 3 ) 10 ; a monocyclic oligomer having an Au-S repeating unit and a cartenane in which two Au 5 (SCH 3 ) 5 rings are interlocked.…”