Emission mössbauer studies on cobalt carbonyl complexes labelled with 57co

Zoltán Homonnay, Sándor Nagy, Attila Vértes, Istvan Kovács, Ferenc Ungváry

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Three different 57Co-doped cobalt carbonyl complexes, NaCo (CO)4, Co2(CO)8, and CH3C(=O)Co(CO)3PPh3, representing a formal valence state of cobalt -1,0, and +1, respectively, were prepared and studied by emission Mossbauer spectroscopy. As a result of aftereffects of the EC decay of 57Co, Fe2+and Fe3+states could be identified in the Mossbauer spectra with hardly any dependence on the initial valence state of cobalt. This observation is explained by assuming the fragmentation of these molecules as result of the electron loss caused by the Auger ionization of the nucleogenic 57Fe atom.

Original languageEnglish
Pages (from-to)131-136
Number of pages6
JournalRadiochimica Acta
Issue number2
Publication statusPublished - Feb 1994

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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