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Goldanskii-Karyagin asymmetry in Fe3(CO)12 |
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| Authors: | Fernande Grandjean Gary J Long Christopher G Benson Umberto Russo |
| Institution: | (1) Institut de Physique, B5, Université de Liège, B-4000, Sart Tilman, Belgium;(2) Department of Chemistry, University of Missouri-Rolla, 65401 Rolla, MO, USA;(3) Dipartimento di Chimica Inorganica, Metallorganica ed Analitica, Universita di Padova, Via Loredan 4, I-35131 Padova, Italy |
| Abstract: | The Mössbauer effect spectra of Fe3(CO)12 have been measured from 4.2 to 295 K and reveal an unusual temperature dependence in the relative area of the two components of the quadrupole doublet associated with the two equivalent iron sites and in the relative area of the two observed quadrupole doublets. The asymmetry in the outer quadrupole doublet is attributed to the Goldanskii-Karyagin effect. The strong temperature dependence of the relative areas of the two quadrupole doublets results from a differing temperature dependence of the recoil free fractions for the two chemically different sites. |
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